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-rw-r--r--src/newgrf_engine.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf_engine.cpp b/src/newgrf_engine.cpp
index f69142a25..6e0ce75ec 100644
--- a/src/newgrf_engine.cpp
+++ b/src/newgrf_engine.cpp
@@ -596,7 +596,7 @@ static uint32 VehicleGetVariable(const ResolverObject *object, byte variable, by
return v->grf_cache.company_information;
case 0x44: // Aircraft information
- if (v->type != VEH_AIRCRAFT) return UINT_MAX;
+ if (v->type != VEH_AIRCRAFT || !Aircraft::From(v)->IsNormalAircraft()) return UINT_MAX;
{
const Vehicle *w = v->Next();