SDR QXEA2017050200334

Service difficulty report · Seal · Bombdr DHC8402

Difficulty date: May 1, 2017
Submitted: May 2, 2017
Operation: Air carrier
Aircraft: N446QX
Make and model: Bombdr DHC8402
Aircraft serial: 4363
Aircraft time: 14,860 hours, 15,705 cycles
System (JASC): 6100 · Propeller System
Part: Seal
Part number: P998012
Condition: Malfunctioned
Location: Nr 1 Prop
Stage of operation: TX
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

NORMAL ENGINE START WHEN CONDITION LEVERS SET TO MAX 1020. NR 1 PROP TOOK 56 SECONDS TO COME OFF 220 RPM; 70 SECONDS TO UN FEATHER. FOR REFERENCE, NR 2 PROP CAME OFF 220 RPM IN 14 SECONDS AND UNFEATHERED AT 26 SECONDS. REMOVED AND REPLACED NR 1 PROPELLER PISTON SEAL IAW AMM 61-10-00-960-801 PARA 1 THROUGHT 5D. COMPLETED INSTALLATION OF PROPELLER PISTION SEAL IAW AMM 61-10-00-960-801, PARA 5E. RETURNED TO SERVICE.