Service difficulty report · Flap Spars · Beech B90

Difficulty date
November 4, 1996
Submitted
March 26, 2000
Operation
Air carrier
Make and model
Beech B90
Engine
Pwa PT6A20
Part
Flap Spars
Part number
5016000354
Condition
Cracked
Location
Slot Track
Stage of operation
IN
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

(CAN) BOTH LEFT AND RIGHT HAND INBOARD FLAPS WERE FOUND TO HAVE CRACKS IN THEIR SPARS. THE CRACKS, APPROXIMATELY 1 INCH IN LENGTH ARE LOCATED AT THE SLOT IN THE SPAR THAT ALLOWS THE INBOARD FLAP TRACK TO PASS THROUGH. THE CRACKS RADIATE IN BOTH DIRECTIONS AWAY FROM THE TOP CORNERS OF THE SLOT AND RUN PARALLEL TO THE LENGTH OF THE SPAR.

More about the Beech B90