- Difficulty date
- November 7, 2019
- Submitted
- November 13, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35176
- Aircraft time
- 51,428 hours, 15,025 cycles
- Part
- Actuator
- Part number
- 5416744
- Part serial
- 873863
- Condition
- Inoperative
- Location
- Lt Ram Air Inlet
- Part time
- 15,898 hours, 4,552 cycles
- Stage of operation
- TX
- 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
LEFT PACK LIGHT IS ILLUMINATED DURING PREFLIGHT - RESETS WITH PRESS OF MASTER RECALL. GROUNDED - YES. CONFIRMED FAULT, L/H PACK LIGHT ILLUMINATES WHEN RECALL PRESSED. L/H PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL L/H RAM AIR INLET ACTUATOR. REMOVED & REPLACED L/H RAM AIR INLET ACTUATOR REF B737-800 AMM 21-51-21, OPS CK NML REF AMM 21-61-00-700-806-002. PULLED & RESET 2 TOTAL C/BS. REVERSAL OF CONFIGURATION CHANGES NOT REQUIRED.