An air carrier flight crew flying a B727 to atl experience a difference in airspeed indications between captain and copilot instruments later resulting in a stick shaker event while slowing to maneuver for their approach.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	451623
Time
Date	199910
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 160 flight time total : 11000 flight time type : 4000
ASRS Report	451623
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	aircraft equipment problem : less severe other anomaly other anomaly
Independent Detector	other flight crewa other flight crewb other other : 3
Resolutory Action	aircraft : equipment problem dissipated flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Noted 7 KT difference between captain's and first officer's IAS on takeoff which continued to show at cruise. First officer flying chose to use speed brake to increase rate of descent while turning base to final. With 20 degree bank and IAS of 207 KTS (captain) and 217 KTS (first officer) got stick shaker when flap 0 degrees maneuver speed was 197 KTS.

Original NASA ASRS Text

Title: AN ACR FLC FLYING A B727 TO ATL EXPERIENCE A DIFFERENCE IN AIRSPD INDICATIONS BTWN CAPT AND COPLT INSTS LATER RESULTING IN A STICK SHAKER EVENT WHILE SLOWING TO MANEUVER FOR THEIR APCH.

Narrative: NOTED 7 KT DIFFERENCE BTWN CAPT'S AND FO'S IAS ON TKOF WHICH CONTINUED TO SHOW AT CRUISE. FO FLYING CHOSE TO USE SPD BRAKE TO INCREASE RATE OF DSCNT WHILE TURNING BASE TO FINAL. WITH 20 DEG BANK AND IAS OF 207 KTS (CAPT) AND 217 KTS (FO) GOT STICK SHAKER WHEN FLAP 0 DEGS MANEUVER SPD WAS 197 KTS.

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.