Service difficulty report · Web · Boeing 74747UF

Difficulty date
July 27, 2010
Submitted
August 3, 2010
Operation
Air carrier
Aircraft
N498MC
Make and model
Boeing 74747UF
Aircraft serial
29259
Aircraft time
47,298 hours, 7,155 cycles
Engine
Ge CF680C2B1F
Part
Web
Condition
Gouged
Location
Bs 1917
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

DURING D02/C03 CHECK, GOUGE DAMAGE WAS FOUND TO THE MAIN DECK BS 1917, RBL 49 WEB OF LATERAL GUIDE SUPPORT (REF FIG 1 THRU 3, PN 65B20024-65). GOUGE WAS CLEANED, BLENDED OUT AND REWORKED IAW EGAT EI T2010A53B-1513 ON WEB IAW THE SRM 53-60-53 WITHIN ALLOWABLE LIMITS AS DEFINED BY THE MFG AND ENSURED NO CRACK AT REWORKED AREA BY HFEC IAW NDT MANUAL PART 6, 51-00- 00. SURFACE FINISHED IAW SRM 51-20-01. MFG REVIEWED AND THE REPAIR PROPOSAL IS STRUCTURALLY ACCEPTABLE PROVIDED THAT A 63RHR OR BETTER SURFACE FINISH IS MAINTAINED FOR THE BLENDED WEB. (REF SR 1-1640130216 AND MFG RDR, FIGURE 4)

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