Service difficulty report · Control Panel · Boeing 737990ER

Difficulty date
August 26, 2017
Submitted
August 30, 2017
Operation
Air carrier
Aircraft
N462AS
Make and model
Boeing 737990ER
Aircraft serial
36362
Aircraft time
13,225 hours, 4,366 cycles
Part
Control Panel
Part number
8221567102
Part serial
4282H7
Condition
Failed
Location
Flight Deck
Part time
13,271 hours, 4,380 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

DURING LLM TESTS FOR NOTED L/P, MODE CONTROL PANEL VERTICAL SPEED ANNUCIATOR READOUT WINDOW HAS BACK LIGHTING BLEED THRU. ACFT GROUNDED. REMOVED & REPLACED THE MODE CONTROL PANEL. OPS GOOD. GROUND VERIFICATION SUCCESSFUL IAW AMM 22-11-34/401.