Service difficulty report · Boss · Boeing 737990ER

Difficulty date
April 30, 2019
Submitted
May 1, 2019
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
24,185 hours, 7,903 cycles
Engine
Cfmint CFM567B27E
Part
Boss
Part number
3401001010
Condition
Loose
Location
Nr 2 Engine
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

NR 2 ENGINE B6-B7 FAN FRAME SHROUD TEST BOSS IS LOOSE AT TWO O'CLOCK AFT FACING FORWARD. GROUNDED - YES. REMOVED AND REINSTALLED BOSS ASSY AT 2 O'CLOCK POSITION ON NR 2 ENG. REF SHOP MANUAL 72-23-31. NO DAMAGE NOTED ON THE FAN CASE. INSTALLED AFT ACOUSTIC PANEL REF AMM 72-23-02-400-801-F00 THROUGH STEP E.(1)(K)1)D). COMPLETED INSTALLATION OF AFT ACOUSTICAL PNL. REF AMM TASK 72-23-02-400-801-F00.