SDR ASAA2019070529952

Service difficulty report · Nut Plate · Boeing 737890

Difficulty date: July 5, 2019
Submitted: July 9, 2019
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 46,864 hours, 13,932 cycles
Engine: Cfmint CFM567B27
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Nut Plate
Condition: Damaged
Location: Nr 1 Spinner
Component: Spinner
Component part number: 3400002050
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

DURING FAN LUBE ON #1 ENG, IT WAS FOUND THAT AFT SPINNER CONE HAS A BAD NUT-PLATE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG AFT SPINNER CONE AND SWAPPED ALL 36 BALANCE SCREWS IAW AMM 71-00-00-750-802-F00, 14.F.(12)(C)1). ALL BALANCE SCREWS ARE P07 OR P14. AFT SPINNER CONE INSTALLATION AND VIBRATION TO BE DONE ON T/C 78472010.