Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
January 25, 2019
Submitted
January 29, 2019
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
23,204 hours, 7,611 cycles
Part
Actuator
Part number
5416744
Part serial
991778
Condition
Failed
Location
Rt Ram Air
Part time
2,329 hours, 763 cycles
Stage of operation
CL
How discovered
O
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

CLIMBING THROUGH 9000 FT ON DEPARTURE FROM JFK RIGHT "PACK" LIGHT ILLUMINATED. FOLLOWED QRH 2.12. LIGHT EXTINGUISHES WITH RECALL RESET. ALSO BLUE "RAM DOOR FULL OPEN" LIGHT ON RIGHT SIDE ILLUMINATED ABOUT THE SAME TIME AS PACK LIGHT. REMAINED ON ENTIRE FLIGHT. GROUNDED - YES. REMOVED AND REPLACED RIGHT RAM AIR ACTUATOR AND RERIGGED RAM AIR DEFLECTOR/MODULATION PANELS PER AMM 21-51-21, AMM 21-51-22. RAN PACKS FOR 10 MINUTES W/ BOTH PZTC BITE/VERIFY TESTS PASSING. DEFECT CLEARED.