What was found
RT PACK ZONE FAULTED ON CONTROLLER DURING BITE PROCEDURE. GROUNDED-YES. REPLACED RT PACK ZONE TRIM AIR MODULATING VALVE, PER B737-800 AMM 21-61-21-400-801. PERFORMED BITE PROCEDURE B737-800 AMM 21-61-00, GREEN GO LIGHT ILLUMINATED.
- Difficulty date
- September 30, 2020
- Submitted
- October 1, 2020
- Operation
- Air carrier
- Aircraft
- N538AS
- Make and model
- Boeing 737890
- Aircraft serial
- 41188
- Aircraft time
- 31,924 hours, 9,344 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 20455
- Condition
- Faulty
- Location
- Rh Ecs Bay
- Part time
- 8,558 hours, 2,550 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.