<< >> NASA ASRS Report 326930, January 1996

Large transport flight crew reduces speed below maneuvering speed for flap confign. Flies about 30 seconds then corrects.

Attributes
ACN	326930
Time
Date	199601
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pit
State Reference	PA
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : pit
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 20000 flight time type : 500
ASRS Report	326930
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Approach cleared us for visual approach runway 10R at pit, asked us to reduce speed to 160 KTS and follow a beech commuter airliner. I called for 1 degree flaps and reset the speed command bug to 160 KTS. Then there was confusion about which aircraft we were to follow. Distracted by that I forgot to call for 5 degrees flaps. The airspeed went to 160 KTS with flaps 1 degree set, below maneuver speed. Aircraft was flown below maneuver speed for flaps 1 degree for 30 seconds. Traffic sequence was resolved and I executed more flaps.

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Original NASA ASRS Text

Title: LGT FLC REDUCES SPD BELOW MANEUVERING SPD FOR FLAP CONFIGN. FLIES ABOUT 30 SECONDS THEN CORRECTS.

Narrative: APCH CLRED US FOR VISUAL APCH RWY 10R AT PIT, ASKED US TO REDUCE SPD TO 160 KTS AND FOLLOW A BEECH COMMUTER AIRLINER. I CALLED FOR 1 DEG FLAPS AND RESET THE SPD COMMAND BUG TO 160 KTS. THEN THERE WAS CONFUSION ABOUT WHICH ACFT WE WERE TO FOLLOW. DISTRACTED BY THAT I FORGOT TO CALL FOR 5 DEGS FLAPS. THE AIRSPD WENT TO 160 KTS WITH FLAPS 1 DEG SET, BELOW MANEUVER SPD. ACFT WAS FLOWN BELOW MANEUVER SPD FOR FLAPS 1 DEG FOR 30 SECONDS. TFC SEQUENCE WAS RESOLVED AND I EXECUTED MORE FLAPS.

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.