Unauthorized intersection takeoff by a B737-400 flight crew. They had no data for that takeoff procedure. Taxiway was blocked ahead by another aircraft not yet ready for takeoff.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	399830
Time
Date	199804
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : yvr
State Reference	BC
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : yvr
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff ground : holding
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	ground : holding
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 110 flight time total : 8700 flight time type : 2100
ASRS Report	399830
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 13800 flight time type : 2000
ASRS Report	399831
Events
Anomaly	non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were #2 for departure at yvr on runway 26L. The controller cleared the aircraft ahead for takeoff and they responded that they were not ready. In order to get us on the runway, the controller asked if we could depart from intersection D5. I gave the captain thumbs up because intersection D5 is only approximately 400 ft less runway for departure and we were approximately 40000 pounds under gross takeoff weight. The only problem is that, after takeoff, I looked in the performance handbook and realized we did not have data for an intersection D5 takeoff. We had more than enough runway. However, we should technically have the data published to depart from any intersection. Supplemental information from acn 399831: I feel the problem arose by getting into too big of a hurry. We should have told ATC to stand by while we verified that the information was in our book. I just assumed that the information was there, which I shouldn't have.

Original NASA ASRS Text

Title: UNAUTH INTXN TKOF BY A B737-400 FLC. THEY HAD NO DATA FOR THAT TKOF PROC. TXWY WAS BLOCKED AHEAD BY ANOTHER ACFT NOT YET READY FOR TKOF.

Narrative: WE WERE #2 FOR DEP AT YVR ON RWY 26L. THE CTLR CLRED THE ACFT AHEAD FOR TKOF AND THEY RESPONDED THAT THEY WERE NOT READY. IN ORDER TO GET US ON THE RWY, THE CTLR ASKED IF WE COULD DEPART FROM INTXN D5. I GAVE THE CAPT THUMBS UP BECAUSE INTXN D5 IS ONLY APPROX 400 FT LESS RWY FOR DEP AND WE WERE APPROX 40000 LBS UNDER GROSS TKOF WT. THE ONLY PROB IS THAT, AFTER TKOF, I LOOKED IN THE PERFORMANCE HANDBOOK AND REALIZED WE DID NOT HAVE DATA FOR AN INTXN D5 TKOF. WE HAD MORE THAN ENOUGH RWY. HOWEVER, WE SHOULD TECHNICALLY HAVE THE DATA PUBLISHED TO DEPART FROM ANY INTXN. SUPPLEMENTAL INFO FROM ACN 399831: I FEEL THE PROB AROSE BY GETTING INTO TOO BIG OF A HURRY. WE SHOULD HAVE TOLD ATC TO STAND BY WHILE WE VERIFIED THAT THE INFO WAS IN OUR BOOK. I JUST ASSUMED THAT THE INFO WAS THERE, WHICH I SHOULDN'T HAVE.

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.