Large transport crew was unable to get normal flap extension.

Attributes
ACN	410209
Time
Date	199807
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : chs
State Reference	SC
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : chs
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 5000
ASRS Report	410209
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Upon flap extension we had a system 'a' hydraulic loss. Using appropriate checklist and upon alternate flap extension we were not able to lower the outboard flaps, and the #4 slat would not extend. We followed all available checklist but none covered this situation. The crew's experience level enabled us to improvise and make an uneventful landing. The #4 slat actuator failed and the outboard alternate flap extension motor failed.

Original NASA ASRS Text

Title: LGT CREW WAS UNABLE TO GET NORMAL FLAP EXTENSION.

Narrative: UPON FLAP EXTENSION WE HAD A SYS 'A' HYD LOSS. USING APPROPRIATE CHKLIST AND UPON ALTERNATE FLAP EXTENSION WE WERE NOT ABLE TO LOWER THE OUTBOARD FLAPS, AND THE #4 SLAT WOULD NOT EXTEND. WE FOLLOWED ALL AVAILABLE CHKLIST BUT NONE COVERED THIS SIT. THE CREW'S EXPERIENCE LEVEL ENABLED US TO IMPROVISE AND MAKE AN UNEVENTFUL LNDG. THE #4 SLAT ACTUATOR FAILED AND THE OUTBOARD ALTERNATE FLAP EXTENSION MOTOR FAILED.

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.