SDR CA960910040

Service difficulty report · Spar Cap · Bnorm BN2B21

Difficulty date: September 3, 1996
Submitted: March 26, 2000
Operation: Air carrier
Make and model: Bnorm BN2B21
Engine: Lyc IO540K1B5
System (JASC): 5711 · Wing Spar
Part: Spar Cap
Condition: Corroded
Location: Upper
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) DURING CORROSION INSPECTION PER SB 190 (CAA AD 020-02-90) CORROSION WAS DETECTED ON FACE OF SPAR CAP LAMINATE. REPAIR SCHEME GIVEN BY FACTORY REP. DURING REPAIR, CORROSION FOUND BETWEEN LAMINATES EXTENDING PAST REPAIR SCHEME LIMITS. FINAL REPAIR ENTAILS REPLACING UPPER REAR SPAR CAP, FROM LEFT INBOARD FUEL TANK RIB TO RIGHT INBOARD FUEL TANK RIB.