SDR UIEA01097

Service difficulty report · Intercostal · Boeing 747230B

Difficulty date: September 7, 2001
Submitted: October 15, 2001
Operation: Air carrier
Aircraft: N537MC
Make and model: Boeing 747230B
Aircraft serial: 1979
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 654U6075594
Condition: Cracked
Location: Fuselage
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

DURING TVCI PER AD 90-06-14 REF SB 747-53-2293 AREA, FOUND VERTICAL CRACK IN INTERCOSTAL, STATION 290, APPROX LBL 26, UPPER NOSE WHEEL WELL BOX, INTERIOR. REMOVED INTERCOSTAL AT STATION 290. REPLACED INTERCOSTAL WITH P/N 654U6075-594 PER B747 SRM 51-30-02 PAGE 5. REMOVED AND REINSTALLED TWO INTERCOSTALS TO GAIN ACCESS PER SRM 51-30-02. (M)