What was found
SATCOM LOCK-UP WAS INDICATED BY MISSING "SAT" SELECTION ON "MCDU MENU" PAGE GROUNDED - YES. -PERFORMED SATCOM LOCK-UP QRH PROCEDURE -"SAT" PROMPT RESTORED ON "MCDU MENU" PAGE
- Difficulty date
- December 17, 2021
- Submitted
- December 21, 2021
- Operation
- Air carrier
- Aircraft
- N474AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40715
- Aircraft time
- 24,300 hours, 7,694 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.