Maintenance technician discovered part of spoiler missing on B747-400 during post flight inspection.

Attributes
ACN	1675681
Time
Date	201908
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Aircraft 1
Make Model Name	B747-400
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Speedbrake/Spoiler
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Other / Unknown

Narrative:

Part of number 6 spoiler departed aircraft X at some point between ZZZ and ZZZZ. Some damage to left/H inboard fore flap; spoiler beyond repair. Discovered upon walk around inspection after landing ZZZZ. Aircraft X went a.O.G.

Original NASA ASRS Text

Title: Maintenance Technician discovered part of spoiler missing on B747-400 during post flight inspection.

Narrative: Part of Number 6 spoiler departed Aircraft X at some point between ZZZ and ZZZZ. Some damage to L/H inboard fore flap; spoiler beyond repair. Discovered upon walk around inspection after landing ZZZZ. Aircraft X went A.O.G.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.