Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
July 24, 2017
Submitted
July 28, 2017
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737990ER
Aircraft serial
41730
Aircraft time
19,030 hours, 6,237 cycles
Part
Actuator
Part number
5416744
Part serial
16406
Condition
Faulted
Location
Lt Ram Air
Part time
19,079 hours, 6,249 cycles
Stage of operation
NR
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

ON RECALL THE PACK LEFT ILLUMINATES. ACFT GROUNDED. TROUBLESHOT THE LEFT PACK IAW FIM 21-62 TASK 801. INSPECTED AND FOUND THE LEFT RAM AIR ACTUATOR FAULTING. REMOVED AND REPLACED THE LT RAM AIR INLET ACTUATOR IAW AMM 21-51-21. OPS CHECKED GOOD.