SDR DALA1125886304

Service difficulty report · Skin · Boeing 747451

Difficulty date: March 29, 2011
Submitted: April 14, 2011
Operation: Air carrier
Aircraft: N664US
Make and model: Boeing 747451
Aircraft serial: 23819
Aircraft time: 91,419 hours, 11,520 cycles
System (JASC): 5240 · Service Doors
Part: Skin
Condition: Cracked
Location: L1 Door
Stage of operation: IN
How discovered: 9
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

LT DOOR SKIN EXTERIOR SURFACE CRACK. L=0.5", BS 44, S-23L. SKIN REPAIR IAW ER/A 489972-14, CAT B REPAIR. INSP 22,000 TOTAL DOOR FLIGHT CYCLES. INTERVAL: 3,000 DOOR FLIGHT CYCLES METHOD: INTERNAL AND EXTERNAL DVI IAW SRM 52-10-01, REPAIR 3. SEC II. A NEW FAA APPROVAL FORM 8100-9 STAGE III DTI MUST BE RECEIVED FROM IN COMPLIANCE WITH 14 CFR 26.43(D) AND 25.571 25-45 PRIOR TO THE INSP AT 22,000 TOTAL DOOR FLIGHT CYCLES.