<< >> NASA ASRS Report 202080, February 1992

Aircraft equipment problem in flap telemetry and sensing devices creates takeoff warning horn. Takeoff aborted.

Attributes
ACN	202080
Time
Date	199202
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dov
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 180 flight time total : 10550 flight time type : 3000
ASRS Report	202080
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 14600 flight time type : 3000
ASRS Report	202075
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On takeoff, pushed power levers up to begin takeoff roll. Heard takeoff warning horn say 'flaps.' aborted takeoff at approximately 15 KTS. Cleared runway, rechked flaps. Reran all checklists and recycled flaps. Returned for another takeoff. In the past I've had numerous aborts due to flap warning horn sounding after flaps set and checked (via using power levers to test for horn). Bumpy taxiway or runway can jar dial-a- flap selector or cause horn on takeoff when everything is actually ok. Supplemental information from acn 202075. Instead of adjusting flaps on runway, felt it best to clear active runway, rerun checklists and settings, before attempting another takeoff.

Related reports:

• Return land due to aircraft equipment problem flap motor fai...
• Aircraft equipment problem. Fuel tank indications intermitte...
• Pilot of light aircraft in IFR flight experiences an equipme...
• Small aircraft X aircraft equipment problem emergency off ai...
• Aircraft equipment problem. Cabin door opened in-flight.
• Aircraft equipment problem distracted a flight crew from fly...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ACFT EQUIP PROBLEM IN FLAP TELEMETRY AND SENSING DEVICES CREATES TKOF WARNING HORN. TKOF ABORTED.

Narrative: ON TKOF, PUSHED PWR LEVERS UP TO BEGIN TKOF ROLL. HEARD TKOF WARNING HORN SAY 'FLAPS.' ABORTED TKOF AT APPROX 15 KTS. CLRED RWY, RECHKED FLAPS. RERAN ALL CHKLISTS AND RECYCLED FLAPS. RETURNED FOR ANOTHER TKOF. IN THE PAST I'VE HAD NUMEROUS ABORTS DUE TO FLAP WARNING HORN SOUNDING AFTER FLAPS SET AND CHKED (VIA USING PWR LEVERS TO TEST FOR HORN). BUMPY TAXIWAY OR RWY CAN JAR DIAL-A- FLAP SELECTOR OR CAUSE HORN ON TKOF WHEN EVERYTHING IS ACTUALLY OK. SUPPLEMENTAL INFO FROM ACN 202075. INSTEAD OF ADJUSTING FLAPS ON RWY, FELT IT BEST TO CLR ACTIVE RWY, RERUN CHKLISTS AND SETTINGS, BEFORE ATTEMPTING ANOTHER TKOF.

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.