Service difficulty report · Warning Message · Boeing 747428F

Difficulty date
September 16, 2020
Submitted
September 16, 2020
Operation
Air carrier
Aircraft
N580UP
Make and model
Boeing 747428F
Aircraft serial
25632
Aircraft time
106,540 hours, 18,131 cycles
Part
Warning Message
Condition
False Activation
Location
Hatch Mechanism
Stage of operation
CL
How discovered
9
Nature of condition
N
Precautionary procedure
O

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

What was found

INSPECTION TYPE: NA DURING CLIMBOUT AT 25,000 FEET 'DOOR F/D OVHD' EICAS MESSAGE COMPLETED CHECKLIST. NORMAL PRESSURISATION CONTINUED TO DELFND MMSG 52116 IN PLF, NIL EXISTING FAULTS. MESSAGE INTERMITTENT. FLIGHT DECK OVHD HATCH MECH OPS CHECK FROM INSIDE C/OUT SEVERAL TIMES, IAW AMM PROC 52-21-00-716-013 UP TO SUB TASK 017, ALSO REFER AMM 52-21-00-862-002 REV 99. OPS NORMAL, INDICATIONS NRML. REQUEST CREW TO PLS OBSV & REPORT IF REQD.