Service difficulty report · Relay · Bombdr DHC8402

Difficulty date
January 8, 2017
Submitted
January 9, 2017
Operation
Air carrier
Aircraft
N416QX
Make and model
Bombdr DHC8402
Aircraft serial
4083
Aircraft time
32,314 hours, 33,382 cycles
Part
Relay
Part number
XD4N
Condition
Malfunctioned
Location
Zone 200
Stage of operation
TX
How discovered
O
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

FA REPORTS EMERGENCY LIGHTS ARE REMAINING ILLUMINATED. TRIED CYCLING ALL SWITCHES, NO FIX. CYCLED A/C POWER AFTER SHUTDOWN, NOW HALF OF EMERGENCY LIGHTS ON WHEN SWITCH IS TURNED ON. TROUBLE SHOT EMERG LIGHT SYSTEM AND FOUND LIGHTS ALTERNATE WHEN SWITCHING BETWEEN ARM AND ON. REPLACED ADVISORY SIGNS/PASSENGER WARNING PANEL ASSY IAW AMM TASKS 31-51-10-000-801 & 31-51-10-400-801. NO HELP. REPLACED RELAYS 3351-K1 AND 3351-K2. REF WM 33-51-00 SHEET 1. OP'S TESTS GOOD FOR ADVISORY SIGNS/ PASSENGER WARNING PANEL ASSY AND EMERG LIGHT SYS. CHECKS GOOD. RETURNED TO SERVICE.