Speed deviation on departure from lax, ca, when ATC gives a late altitude change requiring an immediate leveloff once autoflt had the thrust up for the planned continued climb.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	492317
Time
Date	200011
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude climbout : vacating altitude
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 230 flight time total : 7000 flight time type : 300
ASRS Report	492317
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : overrode automation other
Miss Distance	horizontal : 9000 vertical : 1000
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Aircraft
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared for takeoff to maintain visual with the A320 off of runway 24L lax heading 250 degrees and 3000 ft. As we were passing through 1700 ft we were instructed to level at 2000 ft due to previous A320 climbing extremely slowly. The autoplt was already on due to possible VFR traffic in area over ocean. The PF reached to set the new altitude just as the plane requested climb on the autothrottles. The PF made sure the plane leveled at 2000 ft to maintain separation. By the time he got to the throttles, the aircraft was accelerating through 265 KTS. The plane logic finally caught up with itself and we were level at 2000 ft and 250 KTS. We were never closer than 1 1/2 mi. I believe tower should closely monitor climb speeds before allowing visual separation takeoffs.

Original NASA ASRS Text

Title: SPD DEV ON DEP FROM LAX, CA, WHEN ATC GIVES A LATE ALT CHANGE REQUIRING AN IMMEDIATE LEVELOFF ONCE AUTOFLT HAD THE THRUST UP FOR THE PLANNED CONTINUED CLB.

Narrative: WE WERE CLRED FOR TKOF TO MAINTAIN VISUAL WITH THE A320 OFF OF RWY 24L LAX HDG 250 DEGS AND 3000 FT. AS WE WERE PASSING THROUGH 1700 FT WE WERE INSTRUCTED TO LEVEL AT 2000 FT DUE TO PREVIOUS A320 CLBING EXTREMELY SLOWLY. THE AUTOPLT WAS ALREADY ON DUE TO POSSIBLE VFR TFC IN AREA OVER OCEAN. THE PF REACHED TO SET THE NEW ALT JUST AS THE PLANE REQUESTED CLB ON THE AUTOTHROTTLES. THE PF MADE SURE THE PLANE LEVELED AT 2000 FT TO MAINTAIN SEPARATION. BY THE TIME HE GOT TO THE THROTTLES, THE ACFT WAS ACCELERATING THROUGH 265 KTS. THE PLANE LOGIC FINALLY CAUGHT UP WITH ITSELF AND WE WERE LEVEL AT 2000 FT AND 250 KTS. WE WERE NEVER CLOSER THAN 1 1/2 MI. I BELIEVE TWR SHOULD CLOSELY MONITOR CLB SPDS BEFORE ALLOWING VISUAL SEPARATION TKOFS.

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.