Service difficulty report · Seat Track · Boeing 74747UF

Difficulty date
July 30, 2010
Submitted
August 6, 2010
Operation
Air carrier
Aircraft
N498MC
Make and model
Boeing 74747UF
Aircraft serial
29259
Aircraft time
47,298 hours, 7,155 cycles
Part
Seat Track
Part number
65B1602634
Condition
Corroded
Location
Bs 1210
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 OF DATUM ACFT, DAMAGE WAS FOUND ON CROWN AREA OF MAIN DECK SEAT TRACK (PN: 65B16026-34) OF THE OVERWING LONGITUDINAL FLOORBEAM WEB NEAR STA1210, RBL11.33. THE LOCATION IS SHOWN IN REF FIG 1. PERMANENT REPAIR WAS PERFORMED IAW SRM 53-40-52 R3 FIG 201 AND EGAT EI T2010A53B-1591 R1. THE PURPOSE OF THIS EO IS TO RECORD A MAJOR REPAIR WITH CATEGORY B APPROVED BY FAA FORM 8100-9, FIG 4 AND SCHEDULE A DETAILED VISUAL INSP OF THE OVERWING LONGITUDINAL FLOORBEAM WEB IN THE AREA OF THE REPAIR WITH AN INITIAL INSP PRIOR TO 13,155 TFC AND REPEAT INSP AT EVERY 6,000 FC. THESE INSPECTIONS ARE BASED UPON SRM 53-40-52-2R-3, REPAIR 3- SECTION 44- STA 1050 THRU 1240- SPLICE REPAIR OF BAC 1520-1873. THIS REPAIR IS CATEGORY B REPAIR AND HAS AN EFFECT ON THE INSPECTION PROGRAM OF STRUCTURAL SIGNIFICANT ITEMS W-16 AT THE REPAIR AREA. THE INSP REQUIREMENTS IN THIS EO WILL MEET THE W-16 SSID D6-35022 INSP REQUIREMENTS FOR THE REPAIR AREA.

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