Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
July 25, 2023
Submitted
July 28, 2023
Operation
Air carrier
Aircraft
N495AS
Make and model
Boeing 737990ER
Aircraft serial
41728
Aircraft time
27,562 hours, 8,600 cycles
Part
Actuator
Part number
676000141
Part serial
676000145374
Condition
Malfunctioned
Location
Ram Air
Part time
27,586 hours, 8,606 cycles
Stage of operation
CR
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

RIGHT PACK LIGHT ILLUMINATED AT FL350, COMPLIED WITH QRH PROCEDURE. EXTINGUISHED ON TRIP RESET INITIALLY BUT CAME BACK ON . COMPLETED QRH STEPS TO INCLUDE CLOSING THE ISOLATION VALVE-WITH RIGHT PACK SHUT DOWN THE RAM DOOR REMAINED FULL OPEN. GROUNDED - YES. (RESOLVED ON W/O: 1962746 TASKCARD: N/R-00002 ) REVERSED MEL 21-5D MX PROC. BOTH INLET/EXHUAST SRADA ACTUATORS RETUREND TO NORMAL CONFIG ALL HARDWARE RETURNED TO FLY-AWAY KIT. ACCOMPLISHED PFTC BITE, NO ACTIVE FAULTS. OBSERVED RH INLET ACT. BINDING DURING BITE CHECK. REPLACED R/H SRADA INLET ACTUATOR REF AMM 21-51-21. 19 CBS PULLED/RESET. OP CHK / RIG CHK GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL. THIS CLEARS MEL 21-5D C/N 25089495. PLACARDS REMOVED. SEAMC JOE NOTIFIED.