SDR SWIA971003

Service difficulty report · Connector · Emb EMB120ER

Difficulty date: October 10, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N188SW
Make and model: Emb EMB120ER
Aircraft serial: 120039
Engine: Pwa PW118A
System (JASC): 3425 · Integrated Flight System
Part: Connector
Condition: Dirty
Location: Ahrs Computer
Stage of operation: CL
Nature of condition: O
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INFLIGHT NUMBER ONE AHRS FAILED ADI WENT TO 90 DEGREES UP, HDG OSCILLATED AT 210 DEGREES. WHEN AHRS FAILED HDG'S WERE WITHIN 5 DEG OF EACH OTHER. RETURNED TO LAX. REMOVED NUMBER ONE AHRS COMPUTER, CLEANED CONNECTOR, REINSTALLED AND REINITIALIZED. ALL CHECKS GOOD.

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