Service difficulty report · Mcu · Boeing 737990ER

Difficulty date
August 2, 2022
Submitted
August 4, 2022
Operation
Air carrier
Aircraft
N434AS
Make and model
Boeing 737990ER
Aircraft serial
61620
Aircraft time
23,401 hours, 7,293 cycles
Part
Mcu
Part number
UNKNOWN
Condition
Failed
Location
Unknown
Stage of operation
NR
How discovered
V
Nature of condition
J
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NO SAT PROMPT ON CA SIDE MCDU MENU. APPEARS AS NORMAL ON FO SIDE ALONG WITH ALL SELECTABLE SAT OPTIONS. GROUNDED - YES. PREFORMED SATCOM COMMUNICATION SYSTEM CHECK FOR MCDU ON CA SIDE IAW B737-900 AMM 23-15-00-730-801. TEST PASSED, SAT PROMPT SHOWN ON MCDU (CA SIDE). NO FURTHER DEFECTS NOTED.