SF34B
1)
Symptom: Overhead panel black after engaging external power after engine shutdown.
Cause: Fault in WEU
Solution: Momentarily hold "Lamps Test" in "1", this will break through the WEU glitch and allow signals through to the panel lights.
2)
Symptom: Ailerons heavy and stick at full deflection (on ground with no aerodynamic load, this is often dismissed as normal!).
Cause: May be pulleys slipping off their main bearings causing the retaining washer to become conical, in turn causing friction.
Solution: Ask tech to look at aileron pulleys and their retaining washers.
3)
Symptom: "Avionic Smoke" when powering up avionics in very cold and humid environment. (verify that there is no actual smoke or fire situation).
Cause: Humidity or frost build up in avionic smoke detector.
Solution: Start one engine, open pressure dump valve and apply maximum heating until the warning goes out, may take a few minutes.
/LnS