From d15b6446e34d66817ce1ae89e63c45f547402b04 Mon Sep 17 00:00:00 2001
From: Klaus Basan <klaus.basan@klausbasan.de>
Date: Wed, 28 Jun 2017 00:17:53 +0200
Subject: [PATCH] Ref T26, another callsign to airline resolution

---
 src/blackmisc/aviation/callsign.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/blackmisc/aviation/callsign.cpp b/src/blackmisc/aviation/callsign.cpp
index 563c34c91..fe8afc0da 100644
--- a/src/blackmisc/aviation/callsign.cpp
+++ b/src/blackmisc/aviation/callsign.cpp
@@ -129,8 +129,15 @@ namespace BlackMisc
             QRegularExpressionMatch match = regExp.match(this->m_callsign);
             if (!match.hasMatch()) { return QString(); }
             const QString airline = match.captured(0);
+
+            // hard facts
             if (airline.length() == 3) { return airline; } // we allow 3 letters
             if (airline.length() == 4 && airline.startsWith('V')) { return airline; } // we allow virtual 4 letter codes, e.g. VDLD
+
+            // some people use callsigns like UPSE123
+            const QString number = match.captured(1);
+            if (number.length() >= 3 && airline.length() == 4) { return airline.left(3); }
+
             return ""; // invalid
         }