Wing flap failure.

Attributes
ACN	290241
Time
Date	199412
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Controlling Facilities	tower : ont
Operator	common carrier : air carrier
Make Model Name	DC-8 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	290241
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other other : unspecified
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After landing at ont. Crew called on company frequency to report split flap indication between 10 degrees and up. They cycled flaps and got same indication again. Taxied to parking where I noticed a split flap condition. On closer inspection, found all flap support bolts sheared and inboard and outboard flaps supported by actuators only and resting on structure forward of fore flap. Flaps shifted inboard approximately 6 inches. Left wing flaps only affected. Flap bus cable appears to be intact.

Original NASA ASRS Text

Title: WING FLAP FAILURE.

Narrative: AFTER LNDG AT ONT. CREW CALLED ON COMPANY FREQ TO RPT SPLIT FLAP INDICATION BTWN 10 DEGS AND UP. THEY CYCLED FLAPS AND GOT SAME INDICATION AGAIN. TAXIED TO PARKING WHERE I NOTICED A SPLIT FLAP CONDITION. ON CLOSER INSPECTION, FOUND ALL FLAP SUPPORT BOLTS SHEARED AND INBOARD AND OUTBOARD FLAPS SUPPORTED BY ACTUATORS ONLY AND RESTING ON STRUCTURE FORWARD OF FORE FLAP. FLAPS SHIFTED INBOARD APPROX 6 INCHES. L WING FLAPS ONLY AFFECTED. FLAP BUS CABLE APPEARS TO BE INTACT.

Data retrieved from NASA's ASRS site as of July 2007 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.