Amended clearance requested of ATC as stall warning and aircraft position attitude pitch creates a stall condition. Altitude deviation altitude excursion.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	206770
Time
Date	199204
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ztl
State Reference	GA
Altitude	msl bound lower : 42000 msl bound upper : 43000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 130 flight time total : 6000
ASRS Report	206770
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other anomaly other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

While cruising at FL430, I noticed the left stall warn red light illuminate. Immediately the aircraft pitched violently up and then down. Our speed was then too low to climb back to FL430 and the copilot requested FL410 at my request. Center said it would be a few mins but we were already at 42000 ft and advised center of this. We were then cleared to FL410 and continued our descent as our airspeed increased. After the situation stabilized, we requested and were cleared back up to FL430. The malfunction was reported to maintenance when we arrived at our destination.

Original NASA ASRS Text

Title: AMENDED CLRNC REQUESTED OF ATC AS STALL WARNING AND ACFT POS ATTITUDE PITCH CREATES A STALL CONDITION. ALTDEV ALT EXCURSION.

Narrative: WHILE CRUISING AT FL430, I NOTICED THE L STALL WARN RED LIGHT ILLUMINATE. IMMEDIATELY THE ACFT PITCHED VIOLENTLY UP AND THEN DOWN. OUR SPD WAS THEN TOO LOW TO CLB BACK TO FL430 AND THE COPLT REQUESTED FL410 AT MY REQUEST. CTR SAID IT WOULD BE A FEW MINS BUT WE WERE ALREADY AT 42000 FT AND ADVISED CTR OF THIS. WE WERE THEN CLRED TO FL410 AND CONTINUED OUR DSCNT AS OUR AIRSPD INCREASED. AFTER THE SITUATION STABILIZED, WE REQUESTED AND WERE CLRED BACK UP TO FL430. THE MALFUNCTION WAS RPTED TO MAINT WHEN WE ARRIVED AT OUR DEST.

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.