Service difficulty report · Skin · Boeing 74748EF

Difficulty date
December 9, 2010
Submitted
December 13, 2010
Operation
Air carrier
Aircraft
N419MC
Make and model
Boeing 74748EF
Aircraft serial
28367
Aircraft time
65,498 hours, 11,083 cycles
Part
Skin
Condition
Damaged
Location
Rt Wing Te Flap
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 WALKAROUND INSP AT MST, MX FOUND DAMAGE TO RT OTBD FORE, MID & AFT FLAPS:1. RT OTBD FORE FLAP (PN 65B01901-30) - DAMAGE DETAILS (REF FIG 1): L/E HONEYCOMB DAMAGED /CRACKED/DELAMINATED OVER A LENGTH OF 150 INCH. RT OTBD MID FLAP (PN 65B01925-288) - DAMAGE DETAILS (REF FIG 2): L/E HONEYCOMB DAMAGED/ CRACKED/ DELAMINATED OVER A LENGTH OF 110 INCH. 10 EA. DENTS/DELAMINATION IN LOWER SKIN AT T/E SIDE . 1 EA CRACK IN UPPER SKIN PANEL AT T/E SIDE OF 25 INCH LENGTH. RT OTBD AFT FLAP (PN 65B01970-48) - DAMAGE DETAILS (REF FIG 3). L/E HONEYCOMB DAMAGED /CRACKED/DELAMINATED OVER A LENGTH OF 180 INCH 17 EACH DENTS/DELAMINATION IN LOWER SKIN. 3 EACH CRACKS IN LOWER SKIN AT T/E SIDE OF 33/48/19 INCH LENGTH RESPECTIVELY. DAMAGED AREAS AT RT FORE, MID & AMP; AFT FLAPS ARE BEYOND THE SRM 57-53-01, FIG 101 ALLOWABLE DAMAGE 1 LIMITS. (DISPOSITION WAS MADE TO PERFORM TIME LIMITED REPAIRS AS DESCRIBED IN PART 1 WORK INSTRUCTIONS BY INSTALLING EXTERNAL REPAIR DOUBLERS; SCHEDULE REPEAT INSPECTIONS AT EVERY 5 (FLIGHT CYCLES) AFTER PART 2 AND PERMANENT REPAIR PRIOR TO THE ACCUMULATION OF 2,000 FH (FLIGHT HOURS) AFTER PART 1.)

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