SDR ASAA2017040320352

Service difficulty report · Bearing · Boeing 737990ER

Difficulty date: April 3, 2017
Submitted: April 5, 2017
Operation: Air carrier
Aircraft: N487AS
Make and model: Boeing 737990ER
Aircraft serial: 44108
Aircraft time: 5,849 hours, 1,929 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Bearing
Condition: Worn
Location: Duct Link
Component: Link
Component part number: 322U23382
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 ACCOMPLISHING T/C 48742000 FOUND THE NR 1 ENGINE DUCT ATTACH LINKS FROM DUCT TO FAN CASE WORN AT BEARING ENDS FWD & AFT POSITION. ACFT GROUNDED. REPLACED FWD & AFT ATTACHMENT LINKS ON THE NR 1 ENGINE START DUCT TO FAN CASE 71-00-02, FIG. 25-1.