What was found
DURING "M" CHECK, THE BS 320 CROWN FRAME WEB WAS FOUND TO BE 0.080 INCH THICK INSTEAD OF BLUEPRINT THICKNESS OF 0.140. REPAIRED PER EA 63-212555 SECTION I SECTION II REQUIRES DAMAGE TOLERANCE ANALYSIS TO BE ACCOMPLISHED BY MARCH 2009.
- Difficulty date
- March 27, 2008
- Submitted
- April 9, 2008
- Operation
- Air carrier
- Aircraft
- N670US
- Make and model
- Boeing 747451
- Aircraft serial
- 24225
- Aircraft time
- 77,708 hours, 9,487 cycles
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Condition
- Mismanufactured
- Location
- Fuselage
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- W
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.