Service difficulty report · Trunnion · Boeing 747409F

Difficulty date
February 5, 2026
Submitted
February 9, 2026
Operation
Air carrier
Aircraft
N439GT
Make and model
Boeing 747409F
Aircraft serial
30767
Aircraft time
99,231 hours, 18,065 cycles
Part
Trunnion
Condition
Corroded
Location
Zone 700
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

CORROSION ON OTBD EDGE OF LT BODY GEAR TRUNNION CAP. BLENDED AREA ON OTBD EDGE OF LT BODY GEAR TRUNNION INBD CAP. PERFORMED NDT AND DVI INSP. NO DEFECTS NOTED. ACCOMPLISHED FLAP PEEN, APPLIED TREATMENT, PRIMER AND TOPCOAT PER 747 SRM 53-40-90-2R-1 REP 1 PG 7A DETAIL III. COMPLIED WITH BOEING MESSAGE EAC-TLS-26-0001-08C. FOUND REPAIR STRUCTURALLY ACCEPTABLE AS A CATEGORY "C" REP. WITH VISUALS INSP OF THE FITTING EVERY 200 FC AND PERMANENT REPAIR DUE WITH IN 2000 FC OR 24 MONTHS, WHICH EVER IS FIRST. NO FURTHER DFECETS NOTED.