What was found
FOUND A NR 1 ENGINE FAULT MESSAGE, 73-20771, LONG TIME FAULT, PS3 SIGNAL IS OUT OF RANGE. ACFT GROUNDED. RAN EEC BITE TEST FMC CDU FAULTS IAW AMM 73-21-00, SYSTEM OP CHECKED GOOD, NO DEFECTS NOTED.
- Difficulty date
- February 12, 2018
- Submitted
- March 15, 2018
- Operation
- Air carrier
- Aircraft
- N407AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41731
- Aircraft time
- 20,864 hours, 6,770 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7320 · Fuel Controlling System
- Part
- Fault Message
- Condition
- False Activation
- Location
- Nr 1 Engine
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.