What was found
PERFORMED ENGINE #2 BITE TEST FOUND FAULT CODE 77-20872 "TOP LEFT EFT SIGNAL (T495S4) IS OUT OF RANGE." ON FLIGHT LEG 0 AND 1. ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.
- Difficulty date
- August 26, 2023
- Submitted
- August 30, 2023
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 38,296 hours, 12,194 cycles
- System (JASC)
- 7720 · Engine Temperature Indicating System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.