What was found
FOUND RT UPPER LOBE DOUBLER CRACKED FROM BS 2491 TO 2521, COMMON TO VERT STABILIZER. MAJOR REPAIR ACCOMPLISHED: INSTALLED REPAIR DOUBLERS, SHEAR TIES, & STIFFENERS ON LT & RT SIDES OF ACFT.
- Difficulty date
- March 1, 2010
- Submitted
- March 1, 2010
- Operation
- Air carrier
- Aircraft
- N174UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24381
- Aircraft time
- 78,478 hours, 8,789 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 5330 · Fuselage Main, Plate/Skin
- Part
- Doubler
- Condition
- Cracked
- Location
- Bs 2491-2521
- 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.