What was found
DURING A BITE TEST, THE NR 1 TEMP CONTROLLER LT RAM AIR ACTUATOR FAILED, UNABLE TO CLEAR FAULTS. ACFT GROUNDED. REMOVED AND REPLACED THE LT RAM AIR ACTUATOR IAW MM 21-51-21. PERFORMED A BITE CHECK, NO FAULTS, CHECKED GOOD.
- Difficulty date
- December 20, 2017
- Submitted
- December 21, 2017
- Operation
- Air carrier
- Aircraft
- N568AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35183
- Aircraft time
- 41,558 hours, 12,641 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Actuator
- Part number
- 5416744
- Part serial
- 8559
- Condition
- No Test
- Location
- Ram Air Exhaust
- Part time
- 54,446 hours, 26,713 cycles
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.