SDR GRTA20250910001

Service difficulty report · Stiffener · Beech B200

Difficulty date: July 7, 2025
Submitted: September 10, 2025
Operation: Air carrier
Aircraft: N503AW
Make and model: Beech B200
Aircraft serial: BB1514
Aircraft time: 20,510 hours, 30,103 cycles
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Stiffener
Condition: Cracked
Location: Zone 200
Part time: 20,510 hours
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

WHILE PERFORMING THE AFT PRESSURE BULKHEAD INSPECTION FOUND A CRACK AT THE # 5 ZEE STIFFENER FROM THE TOP OF THE BULHEAD ON THE FWD SIDE OF THE BULKHEAD THE CRACK STARTS 2.1 INCHES FROM THE OUTBD R/H SIDE AND RUNS HORIZONTALY 21 INCHES JUST UNDER THE RIVET LINE FOR STIFFENER #5. THE #9 STRINGER IS INLINE WITH THE #5 ZEE STIFFENER. REPLACED AFT PRESSURE BULKHEAD LOWER WEB IAW KING AIR SIRM 20-50. INSTALLED Z STIFFENERS PN 101-440119-53/-57 IAW TEXTRON FIELD REPAIR FR-BB-1514-15422 REV -.

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