What was found
BS 2120 FRAME UPPER STRUCTURE CRACKED BETWEEN RBL 40 & RBL 45.3. MAJOR REPAIR ACCOMPLISHED, MANUFACTURED & INSTALLED NEW FRAME SECTION REF ECRA 5300-01382, EN 747EN-53-038 5.
- Difficulty date
- December 12, 2011
- Submitted
- December 22, 2011
- Operation
- Air carrier
- Aircraft
- N171UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24322
- Aircraft time
- 83,896 hours, 9,991 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Condition
- Cracked
- Location
- Bs 2120
- 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.