SDR QXEA2019072500281

Service difficulty report · Warning System · Bombdr DHC8402

Difficulty date: July 23, 2019
Submitted: July 25, 2019
Operation: Air carrier
Aircraft: N453QX
Make and model: Bombdr DHC8402
Aircraft serial: 4489
Aircraft time: 10,185 hours, 10,904 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Warning System
Condition: False Activation
Location: Cockpit
Part time: 10,185 hours, 10,904 cycles
Stage of operation: AP
How discovered: O
Nature of condition: N
Precautionary procedure: L

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FLAP POWER CAUTION ILLUMINATED WHEN SELECTING FROM FLAPS 15° TO 35°. CHECKLIST RESET DID NOT WORK. PERFORMED A GO-AROUND. LANDED WITHOUT INCIDENT WITH FLAPS AT 15. REMOVED FROM SERVICE. FOUND ECU CONTINUOUS BIT MSG IN CDS. REF FIM TASK 27-50-00-810-807. CLEARED CDS FAULT MSG AND REMOVED AND REPLACED FLAP CONTROL UNIT AS A PRECAUTIONARY MEASURE IAW AMM TASKS 27-51-01-000-801 AND 27-51-01-400-801. FUNCTIONAL TEST OF FLAP CONTROL SYSTEM GOOD IAW AMM 27-51-00-720-801. NO CDS MSGS OR CAUTIONS NOTED. A/C OKAY FOR CONTINUED SERVICE.