SDR DALA1111466302

Service difficulty report · Skin · Boeing 747451

Difficulty date: February 15, 2011
Submitted: February 17, 2011
Operation: Air carrier
Aircraft: N662US
Make and model: Boeing 747451
Aircraft serial: 23720
Aircraft time: 90,884 hours, 11,643 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Worn
Location: Bs 2521-2628
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

WEAR WAS FOUND AT FUSELAGE SKIN AND VERTICAL STABILIZER SEAL INTERFACE. STA 2521-2628. MAX DEPTH: 0.027" IAW ER/A 488622-14AD, REV 0 AND SRM 53-00-01, REPAIR 15, FIG 201 PERFORMED MED FUSELAGE SKIN-BUTT JOINT EXTERNAL REPAIR, THIS IS A CATEGORY" B" REPAIR INSP. REQUIREMENTS INSPECTION THRESHOLD: 1500 FLIGHT CYCLES, METHOD: INTERNAL HFEC INTERVAL 6000 FLIGHT CYCLES, REF: NDT PART6 51-00-00, FIG4. METHOD: EXTERNAL LFEC: INTERVAL: 1500 FLIGHT CYCLES, REF: NDT PART6, 53-30-00, FIG5.RII COMPLETED.