Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
March 11, 2022
Submitted
March 21, 2022
Operation
Air carrier
Aircraft
N481AS
Make and model
Boeing 737990ER
Aircraft serial
44106
Aircraft time
24,504 hours, 7,742 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
NR
How discovered
V
Nature of condition
J
Precautionary procedure
O

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

What was found

LEFT PACK CAUTION LIGHT RESETS WITH "PRESS TO RESET". GROUNDED - YES. FOLLOWED B737-900 FIM 21-62 TASK 801 WHILE PERFORMING BITE CHECK ON PZTC SRADA INLET FAULT LIGHT ILLUMINATED FOR PREV FLT. ZONE TRIM VALVE FAULT LIGHT ILLUMINATED AFTER VERIFY PRESSED. PERFORMED AFT CABIN TRIM AIR VALVE FIM 21-62 TASK 835 AFTER CIRCUIT BREAKER RESET AND RECHECK OF FAULT. FOUND INLET ACTUATOR REQUIRING FURTHER ADJUSTMENT. ADJUSTED INLET ACTUATOR AMM 21-52-21-400-801 THRU J(12)(B) ADJUSTED LH RAM AIR DEFLECTOR DOOR REF AMM 21-51-22-400-803. REF AMM 21-51-21-400-802. RAM AIR DOOR LINKAGE INSPECTION GOOD PER AMM 21-51-22-200-802.