Service difficulty report · Inlet Door · Boeing 777300ER

Difficulty date
January 31, 2026
Submitted
February 6, 2026
Operation
Air carrier
Aircraft
N2341U
Make and model
Boeing 777300ER
Aircraft serial
63721
Aircraft time
38,015 hours, 4,056 cycles
Part
Inlet Door
Part number
7340739001
Part serial
0133
Condition
Inflt Separation
Location
Zone 300
Part time
38,015 hours, 4,056 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

WHILE TROUBLESHOOTING LP 7779489, DISCOVERED APU INLET DOOR ASSY MISSING, DEPARTED ACFT DURING FLT FROM SFO TO HNL LOCKED APU DOOR EICAS STATUS APU INLET DOOR IS NOT IN COMMANDED POSITION. DB ELMS P310 ELECTRONIC UNIT, NO DAMAGE FOUND INSIDE INLET. ACTUATOR ROD END BROKEN. FOUND DENTS AFT OF APU DOOR, AT TOP OF TAIL CONE. LONG DENT APPROX 10 IN., SMALL DENT ABOUT 3 IN. PERFOMED A DETAILED INSPECTION OF THE GENERAL AREA NOTED OF CONCERN, ALSO FOUND UPPER FLANGE OF INTAKE ASSY & JUMPER DAMAGED. NO OTHER DAMAGES NOTED ON THE SURROUNDING STRUCTURE. SEAL ON UPPER FLANGE TORN WIDE ANGLE, DENTS AFT OF APU DOOR FOUND TO BE ALL WITHIN LIMITS IAW SRM 53-00-01-1A-1, TABLE A, DETAIL E. COMPLIED WITH EC/RA 4915-01103. INSTALLED BLOCKING PLATE FOR INLET DOOR. APU INLET DOOR ACTUATOR AT P310 PANEL REMAINS PULLED & COLLARED. PLACARD APPLIED. R & R APU INLET DOOR ACTUATOR IAW AMM 49-15-06-000-801 & DISASSEMBLED INLET DOOR ACTUATOR FROM ASSY & AMM APU DOOR POSITION SWITCH INSTALLATION TEST CHK GOOD IAW AMM 49-15-02-400-801.

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