SDR ASAA2021021734164

Service difficulty report · Adiru · Boeing 737890

Difficulty date: February 17, 2021
Submitted: February 23, 2021
Operation: Air carrier
Aircraft: N569AS
Make and model: Boeing 737890
Aircraft serial: 35184
Aircraft time: 50,954 hours, 15,430 cycles
System (JASC): 3420 · Attitude and Direction Data System
Part: Adiru
Part number: HG2050AC11
Part serial: 56053302
Condition: Faulted
Location: Right
Part time: 28,223 hours, 8,578 cycles
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

R IRS FAULT. GROUNDED - YES. AIR TURN BACK. DIVERSION TIME 134 MINUTES - NO CURRENT FAULT OR INFLIGHT FAULT ON R-ADIRU BITE. DFCS FFR SHOWS 6 FAULTS R-ADIRU 22-11423, 22-11006, 22-11423 ON CH-B. MSG 22-11379, 22-11005 CH-A. REMOVED & REPLACED R-ADIRU REF B737-800 AMM 34-21-01, INSTALLATION & LLM TEST PASS.