diff --git a/src/blackmisc/aviation/aircrafticaocode.cpp b/src/blackmisc/aviation/aircrafticaocode.cpp
index 5ca9f7461..e9e4d5ba0 100644
--- a/src/blackmisc/aviation/aircrafticaocode.cpp
+++ b/src/blackmisc/aviation/aircrafticaocode.cpp
@@ -7,10 +7,10 @@
  * contained in the LICENSE file.
  */
 
+#include "blackmisc/simulation/matchingutils.h"
 #include "blackmisc/aviation/aircrafticaocode.h"
-#include "blackmisc/comparefunctions.h"
 #include "blackmisc/db/datastoreutility.h"
-#include "blackmisc/logcategory.h"
+#include "blackmisc/comparefunctions.h"
 #include "blackmisc/logcategorylist.h"
 #include "blackmisc/propertyindex.h"
 #include "blackmisc/statusmessage.h"
@@ -28,6 +28,7 @@
 
 using namespace BlackMisc;
 using namespace BlackMisc::Db;
+using namespace BlackMisc::Simulation;
 
 namespace BlackMisc
 {
@@ -130,35 +131,48 @@ namespace BlackMisc
             return this->getCombinedIcaoStringWithKey();
         }
 
-        int CAircraftIcaoCode::calculateScore(const CAircraftIcaoCode &otherCode) const
+        int CAircraftIcaoCode::calculateScore(const CAircraftIcaoCode &otherCode, CStatusMessageList *log) const
         {
-            if (this->isDbEqual(otherCode)) { return 100; }
+            if (this->isDbEqual(otherCode))
+            {
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Equal DB code: 100"));
+                return 100;
+            }
 
             int score = 0;
             if (this->hasValidDesignator() && this->getDesignator() == otherCode.getDesignator())
             {
                 // 0..65
                 score += 50; // same designator
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Same designator: %1").arg(score));
 
+                int scoreOld = score;
                 if (this->getRank() == 0) { score += 15; }
                 else if (this->getRank() == 1) { score += 12; }
                 else if (this->getRank() < 10) { score += (10 - this->getRank()); }
+                if (score > scoreOld)
+                {
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Added rank: %1").arg(score));
+                }
             }
             else
             {
                 if (this->hasFamily() && this->getFamily() == otherCode.getFamily())
                 {
                     score += 30;
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Added family: %1").arg(score));
                 }
                 else if (this->hasValidCombinedType() && otherCode.getCombinedType() == this->getCombinedType())
                 {
                     score += 20;
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Added combined code: %1").arg(score));
                 }
                 else if (this->hasValidCombinedType())
                 {
                     if (this->getEngineCount() == otherCode.getEngineCount()) { score += 2; }
                     if (this->getEngineType() == otherCode.getEngineType()) { score += 2; }
                     if (this->getAircraftType() == otherCode.getAircraftType()) { score += 2; }
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Added combined code parts: %1").arg(score));
                 }
             }
 
@@ -168,16 +182,21 @@ namespace BlackMisc
                 if (this->matchesManufacturer(otherCode.getManufacturer()))
                 {
                     score += 10;
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Matches manufacturer '%1': %2").arg(this->getManufacturer()).arg(score));
                 }
                 else if (this->getManufacturer().contains(otherCode.getManufacturer(), Qt::CaseInsensitive))
                 {
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Contains manufacturer '%1': %2").arg(this->getManufacturer()).arg(score));
                     score += 5;
                 }
             }
 
             // 0..75 so far
-            if (this->isMilitary() == otherCode.isMilitary()) { score += 10; }
-
+            if (this->isMilitary() == otherCode.isMilitary())
+            {
+                score += 10;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Matches military flag '%1': %2").arg(boolToYesNo(this->isMilitary())).arg(score));
+            }
             // 0..85
             return score;
         }
diff --git a/src/blackmisc/aviation/aircrafticaocode.h b/src/blackmisc/aviation/aircrafticaocode.h
index 3c1e41092..8732e9b63 100644
--- a/src/blackmisc/aviation/aircrafticaocode.h
+++ b/src/blackmisc/aviation/aircrafticaocode.h
@@ -289,7 +289,7 @@ namespace BlackMisc
 
             //! Considers rank, manufacturer and family 0..100
             //! \remark normally used with a selected set of ICAO codes or combined types
-            int calculateScore(const CAircraftIcaoCode &otherCode) const;
+            int calculateScore(const CAircraftIcaoCode &otherCode, CStatusMessageList *log = nullptr) const;
 
             //! Valid designator?
             static bool isValidDesignator(const QString &designator);
diff --git a/src/blackmisc/aviation/airlineicaocode.cpp b/src/blackmisc/aviation/airlineicaocode.cpp
index 63f2c6e06..317dcddfc 100644
--- a/src/blackmisc/aviation/airlineicaocode.cpp
+++ b/src/blackmisc/aviation/airlineicaocode.cpp
@@ -9,6 +9,7 @@
 
 #include "airlineicaocode.h"
 #include "callsign.h"
+#include "blackmisc/simulation/matchingutils.h"
 #include "blackmisc/db/datastoreutility.h"
 #include "blackmisc/comparefunctions.h"
 #include "blackmisc/icons.h"
@@ -32,6 +33,7 @@
 
 using namespace BlackMisc;
 using namespace BlackMisc::Db;
+using namespace BlackMisc::Simulation;
 
 namespace BlackMisc
 {
@@ -46,7 +48,7 @@ namespace BlackMisc
             }
         }
 
-        CAirlineIcaoCode::CAirlineIcaoCode(const QString &airlineDesignator, const QString &airlineName, const BlackMisc::CCountry &country, const QString &telephony, bool virtualAirline, bool operating)
+        CAirlineIcaoCode::CAirlineIcaoCode(const QString &airlineDesignator, const QString &airlineName, const CCountry &country, const QString &telephony, bool virtualAirline, bool operating)
             : m_designator(airlineDesignator.trimmed().toUpper()), m_name(airlineName), m_telephonyDesignator(telephony), m_country(country), m_isVa(virtualAirline), m_isOperating(operating)
         {
             if (m_designator.length() == 4)
@@ -57,7 +59,7 @@ namespace BlackMisc
 
         const QString CAirlineIcaoCode::getVDesignator() const
         {
-            if (!isVirtualAirline()) { return m_designator; }
+            if (!this->isVirtualAirline()) { return m_designator; }
             return QLatin1Char('V') % m_designator;
         }
 
@@ -89,7 +91,7 @@ namespace BlackMisc
 
         QString CAirlineIcaoCode::getSimplifiedName() const
         {
-            return BlackMisc::simplifyNameForSearch(this->getName());
+            return simplifyNameForSearch(this->getName());
         }
 
         bool CAirlineIcaoCode::hasValidCountry() const
@@ -183,7 +185,7 @@ namespace BlackMisc
                    QLatin1String(" Mil: ") % boolToYesNo(this->isMilitary());
         }
 
-        CVariant CAirlineIcaoCode::propertyByIndex(const BlackMisc::CPropertyIndex &index) const
+        CVariant CAirlineIcaoCode::propertyByIndex(const CPropertyIndex &index) const
         {
             if (index.isMyself()) { return CVariant::from(*this); }
             if (IDatastoreObjectWithIntegerKey::canHandleIndex(index)) { return IDatastoreObjectWithIntegerKey::propertyByIndex(index); }
@@ -297,7 +299,7 @@ namespace BlackMisc
             QString s(getVDesignator());
             if (s.isEmpty()) s = "????";
             if (hasName()) { s = s.append(" ").append(getName()); }
-            return s.append(getDbKeyAsStringInParentheses(" "));
+            return s.append(this->getDbKeyAsStringInParentheses(" "));
         }
 
         CAirlineIcaoCode CAirlineIcaoCode::thisOrCallsignCode(const CCallsign &callsign) const
@@ -360,34 +362,43 @@ namespace BlackMisc
             return this->getCombinedStringWithKey();
         }
 
-        int CAirlineIcaoCode::calculateScore(const CAirlineIcaoCode &otherCode) const
+        int CAirlineIcaoCode::calculateScore(const CAirlineIcaoCode &otherCode, CStatusMessageList *log) const
         {
-            if (this->isDbEqual(otherCode)) { return 100; }
+            if (this->isDbEqual(otherCode))
+            {
+                CMatchingUtils::addLogDetailsToList(log, *this, QStringLiteral("DB equal score: 100"));
+                return 100;
+            }
             const bool bothFromDb = this->isLoadedFromDb() && otherCode.isLoadedFromDb();
             int score = 0;
             if (otherCode.hasValidDesignator() && this->getDesignator() == otherCode.getDesignator())
             {
                 score += 60;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Same designator: %1").arg(score));
             }
 
             // only for DB values we check VA
             if (bothFromDb && this->isVirtualAirline() == otherCode.isVirtualAirline())
             {
                 score += 20;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("VA equality: %1").arg(score));
             }
 
             // consider the various names
             if (this->hasName() && this->getName() == otherCode.getName())
             {
                 score += 20;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Same name '%1': %2").arg(this->getName()).arg(score));
             }
             else if (this->hasTelephonyDesignator() && this->getTelephonyDesignator() == otherCode.getTelephonyDesignator())
             {
                 score += 15;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Same telephony '%1': %2").arg(this->getTelephonyDesignator()).arg(score));
             }
             else if (this->hasSimplifiedName() && this->getSimplifiedName() == otherCode.getSimplifiedName())
             {
                 score += 10;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Same simplified name '%1': %2").arg(this->getSimplifiedName()).arg(score));
             }
             return score;
         }
diff --git a/src/blackmisc/aviation/airlineicaocode.h b/src/blackmisc/aviation/airlineicaocode.h
index c373fbdf3..6e06c7029 100644
--- a/src/blackmisc/aviation/airlineicaocode.h
+++ b/src/blackmisc/aviation/airlineicaocode.h
@@ -223,7 +223,7 @@ namespace BlackMisc
             QString asHtmlSummary() const;
 
             //! Score against other code 0..100
-            int calculateScore(const CAirlineIcaoCode &otherCode) const;
+            int calculateScore(const CAirlineIcaoCode &otherCode, CStatusMessageList *log = nullptr) const;
 
             //! Valid designator?
             static bool isValidAirlineDesignator(const QString &airline);
diff --git a/src/blackmisc/aviation/livery.cpp b/src/blackmisc/aviation/livery.cpp
index e2bc73054..ad3a51e0f 100644
--- a/src/blackmisc/aviation/livery.cpp
+++ b/src/blackmisc/aviation/livery.cpp
@@ -7,10 +7,11 @@
  * contained in the LICENSE file.
  */
 
+#include "blackmisc/simulation/matchingutils.h"
+#include "blackmisc/db/datastoreutility.h"
 #include "blackmisc/aviation/livery.h"
 #include "blackmisc/compare.h"
 #include "blackmisc/comparefunctions.h"
-#include "blackmisc/db/datastoreutility.h"
 #include "blackmisc/logcategory.h"
 #include "blackmisc/logcategorylist.h"
 #include "blackmisc/propertyindex.h"
@@ -29,6 +30,7 @@
 using namespace BlackMisc;
 using namespace BlackMisc::Db;
 using namespace BlackMisc::PhysicalQuantities;
+using namespace BlackMisc::Simulation;
 
 namespace BlackMisc
 {
@@ -113,7 +115,7 @@ namespace BlackMisc
         bool CLivery::matchesCombinedCode(const QString &candidate) const
         {
             if (candidate.isEmpty() || !this->hasCombinedCode()) { return false; }
-            QString c(candidate.trimmed().toUpper());
+            const QString c(candidate.trimmed().toUpper());
             return c == m_combinedCode;
         }
 
@@ -372,9 +374,13 @@ namespace BlackMisc
                    ).replace(" ", "&nbsp;");
         }
 
-        int CLivery::calculateScore(const CLivery &otherLivery, bool preferColorLiveries) const
+        int CLivery::calculateScore(const CLivery &otherLivery, bool preferColorLiveries, CStatusMessageList *log) const
         {
-            if (this->isDbEqual(otherLivery)) { return 100; }
+            if (this->isDbEqual(otherLivery))
+            {
+                CMatchingUtils::addLogDetailsToList(log, *this, QStringLiteral("Equal DB code: 100"));
+                return 100;
+            }
 
             // get a level
             static const int sameAirlineIcaoLevel = CAirlineIcaoCode("DLH").calculateScore(CAirlineIcaoCode("DLH"));
@@ -382,11 +388,13 @@ namespace BlackMisc
 
             int score = 0;
             const double colorMultiplier = 1.0 - this->getColorDistance(otherLivery);
+
             if (this->isColorLivery() && otherLivery.isColorLivery())
             {
                 // 2 color liveries 25..85
                 score = 25;
                 score += 60 * colorMultiplier;
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("2 color liveries, color multiplier %1: %2").arg(colorMultiplier).arg(score));
             }
             else if (this->isAirlineLivery() && otherLivery.isAirlineLivery())
             {
@@ -395,9 +403,14 @@ namespace BlackMisc
                 // 0..25 based on color distance
                 // 0..10 based on mil.flag
                 // same ICAO at least means 30, max 50
-                score = 0.5 * this->getAirlineIcaoCode().calculateScore(otherLivery.getAirlineIcaoCode());
+                score = 0.5 * this->getAirlineIcaoCode().calculateScore(otherLivery.getAirlineIcaoCode(), log);
                 score += 25 * colorMultiplier;
-                if (this->isMilitary() == otherLivery.isMilitary()) { score += 10; }
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("2 airline liveries, color multiplier %1: %2").arg(colorMultiplier).arg(score));
+                if (this->isMilitary() == otherLivery.isMilitary())
+                {
+                    CMatchingUtils::addLogDetailsToList(log, *this, QString("Mil.flag '%1' matches: %2").arg(boolToYesNo(this->isMilitary())).arg(score));
+                    score += 10;
+                }
             }
             else if ((this->isColorLivery() && otherLivery.isAirlineLivery()) || (otherLivery.isColorLivery() && this->isAirlineLivery()))
             {
@@ -406,6 +419,7 @@ namespace BlackMisc
                 // 25 is weaker as same ICAO code / 2 from above
                 score = preferColorLiveries ? 25 : 0;
                 score += 25 * colorMultiplier; // needs to be the same as in 2 airlines
+                CMatchingUtils::addLogDetailsToList(log, *this, QString("Color/airline mixed, color multiplier %1: %2").arg(colorMultiplier).arg(score));
             }
             return score;
         }
diff --git a/src/blackmisc/aviation/livery.h b/src/blackmisc/aviation/livery.h
index 6e36c61b8..1fd254a9a 100644
--- a/src/blackmisc/aviation/livery.h
+++ b/src/blackmisc/aviation/livery.h
@@ -178,7 +178,7 @@ namespace BlackMisc
 
             //! Score by comparison to another livery 0..100
             //! \remark normally used with liveries preselect by airline ICAO code
-            int calculateScore(const CLivery &otherLivery, bool preferColorLiveries = false) const;
+            int calculateScore(const CLivery &otherLivery, bool preferColorLiveries = false, CStatusMessageList *log = nullptr) const;
 
             //! Object from JSON
             static CLivery fromDatabaseJson(const QJsonObject &json, const QString &prefix = QString("liv_"));
diff --git a/src/blackmisc/simulation/aircraftmodel.cpp b/src/blackmisc/simulation/aircraftmodel.cpp
index e9ae6676c..4fa354320 100644
--- a/src/blackmisc/simulation/aircraftmodel.cpp
+++ b/src/blackmisc/simulation/aircraftmodel.cpp
@@ -578,10 +578,9 @@ namespace BlackMisc
 
         int CAircraftModel::calculateScore(const CAircraftModel &compareModel, bool preferColorLiveries, CStatusMessageList *log) const
         {
-            const int icaoScore = this->getAircraftIcaoCode().calculateScore(compareModel.getAircraftIcaoCode());
-            CMatchingUtils::addLogDetailsToList(log, this->getCallsign(), QString("ICAO score: ").arg(icaoScore));
-            const int liveryScore = this->getLivery().calculateScore(compareModel.getLivery(), preferColorLiveries);
-            CMatchingUtils::addLogDetailsToList(log, this->getCallsign(), QString("Livery score: ").arg(liveryScore));
+            const int icaoScore = this->getAircraftIcaoCode().calculateScore(compareModel.getAircraftIcaoCode(), log);
+            const int liveryScore = this->getLivery().calculateScore(compareModel.getLivery(), preferColorLiveries, log);
+            CMatchingUtils::addLogDetailsToList(log, this->getCallsign(), QString("ICAO score: %1 | livery score: %2").arg(icaoScore).arg(liveryScore));
             return 0.5 * (icaoScore + liveryScore);
         }
 
diff --git a/src/blackmisc/simulation/aircraftmodellist.cpp b/src/blackmisc/simulation/aircraftmodellist.cpp
index 2728c03bb..592d7ad7f 100644
--- a/src/blackmisc/simulation/aircraftmodellist.cpp
+++ b/src/blackmisc/simulation/aircraftmodellist.cpp
@@ -718,15 +718,23 @@ namespace BlackMisc
             ScoredModels scoreMap;
 
             // normally prefer colors if there is no airline
-            CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("Prefer color liveries: %1, airline: '%2', ignore zero scores: %3").arg(boolToYesNo(preferColorLiveries), remoteModel.getAirlineIcaoCodeDesignator(), boolToYesNo(ignoreZeroScores)));
-            CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("Scoring in list with %1 models, airline liveries: %2, color liveries: %3").arg(this->size()).arg(this->countModelsWithAirlineLivery()).arg(this->countModelsWithColorLivery()));
+            CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("Prefer color liveries: '%1', airline: '%2', ignore zero scores: '%3'").arg(boolToYesNo(preferColorLiveries), remoteModel.getAirlineIcaoCodeDesignator(), boolToYesNo(ignoreZeroScores)));
+            CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("--- Start scoring in list with %1 models, airline liveries: %2, color liveries: %3").arg(this->size()).arg(this->countModelsWithAirlineLivery()).arg(this->countModelsWithColorLivery()));
 
+            int c = 1;
             for (const CAircraftModel &model : *this)
             {
-                const int score = model.calculateScore(remoteModel, preferColorLiveries, log);
+                CStatusMessageList subMsgs;
+                const int score = model.calculateScore(remoteModel, preferColorLiveries, log ? &subMsgs : nullptr);
                 if (ignoreZeroScores && score < 1) { continue; }
+
+                CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("--- Calculating #%1 '%2'---").arg(c++).arg(model.getModelStringAndDbKey()));
+                if (log) { log->push_back(subMsgs); }
+                CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QString("--- End calculating #%1 ---").arg(c));
+
                 scoreMap.insertMulti(score, model);
             }
+            CMatchingUtils::addLogDetailsToList(log, remoteModel.getCallsign(), QStringLiteral("--- End scoring ---"));
             return scoreMap;
         }