Service difficulty report · Doubler · Boeing 747422

Difficulty date
June 15, 2012
Submitted
July 26, 2012
Operation
Air carrier
Aircraft
N178UA
Make and model
Boeing 747422
Aircraft serial
24385
Aircraft time
90,479 hours, 10,927 cycles
Engine
Pwa PW4056
Part
Doubler
Part number
65B292662
Condition
Cracked
Location
Fuselage
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

BS 2521 UPPER LOBE RIGHT DOUBLER P/N 65B29266-2 CRACK REPAIRED IAW ECRA 5313-01044. INSPECTION REQUIRED AT 4,000 FLIGHT CYCLE INTERVAL WITH A THRESHOLD OF 14,927 AIRFRAME TOTAL CYCLES. TEXT IS INCOMPLETE, SEE ECRA 5313-01044. REPAIRED IAW ECRA 5313- 01044. RE-INSPECTION REQUIRED INCORPORATED INTO MAINT PROGRAM AND EQ6042 WILL BE ACTIVATED AFTER COMP OF COA 851103. TEXT INCOMPLETE-SEE ECRA.