SDR ASAA2017100922153

Service difficulty report · Light · Boeing 737990ER

Difficulty date: October 9, 2017
Submitted: October 11, 2017
Operation: Air carrier
Aircraft: N481AS
Make and model: Boeing 737990ER
Aircraft serial: 44106
Aircraft time: 8,743 hours, 2,950 cycles
System (JASC): 3100 · Indicating/Recording System
Part: Light
Condition: Malfunctioned
Location: Control Panel
Stage of operation: NR
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

THERE'S NO CONTROL OF THE LIGHTING ON THE PRESSURE CONTROL PANEL. ACFT GROUNDED. FOUND THE FLT ALT, LAND ALT, AND OUTFLOW VALVE IND STUCK ON MAXIMUM BRIGHTNESS. ADDITIONALLY FOUND THE OUTFLOW VALVE INDICATOR SHOWING CLOSED WITH THE VALVE IN THE OPEN POSITION. PERFORMED POWER RESET PROCEDURE IAW FIM 21-31, TASK 803, PARA I, OPS CHECKED NORMAL. OUTFLOW VALVE POSITION INDICATION AGREES WITH OUTFLOW VALVE POSITION.