Air carrier large transport altitude deviation undershot altitude crossing restriction on SID from o...

Attributes
ACN	153251
Time
Date	199008
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pom airport : ont
State Reference	CA
Altitude	msl bound lower : 11800 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 30000 flight time type : 2400
ASRS Report	153251
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : published procedure
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : unable none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Pomona 4 departure with a restriction of 14000' at dowst intersection. Due to the weight of the aircraft we were unable to meet the 14000' crossing altitude at dowst. Controller was advised as we passed pomona VOR 19 mi from dowst. The controller acknowledged but offered no alternative plan or advise. Called again and advised him that we could cross at 12000'. He replied with, 'continue climb'. After passing dowst at 11800' we were advised of an altitude crossing violation. I over estimated the aircraft performance ability at the gross weight of 183.4. The company manual has no information to refer to regarding the performance limits for altitude/distance with temperature and weight factors. The controllers vague reply of 'continue climb' suggested that we were cleared to cross at an altitude less than 14000'

Original NASA ASRS Text

Title: ACR LGT ALT DEVIATION UNDERSHOT ALT CROSSING RESTRICTION ON SID FROM ONT.

Narrative: POMONA 4 DEP WITH A RESTRICTION OF 14000' AT DOWST INTXN. DUE TO THE WT OF THE ACFT WE WERE UNABLE TO MEET THE 14000' XING ALT AT DOWST. CTLR WAS ADVISED AS WE PASSED POMONA VOR 19 MI FROM DOWST. THE CTLR ACKNOWLEDGED BUT OFFERED NO ALTERNATIVE PLAN OR ADVISE. CALLED AGAIN AND ADVISED HIM THAT WE COULD CROSS AT 12000'. HE REPLIED WITH, 'CONTINUE CLB'. AFTER PASSING DOWST AT 11800' WE WERE ADVISED OF AN ALT XING VIOLATION. I OVER ESTIMATED THE ACFT PERFORMANCE ABILITY AT THE GROSS WT OF 183.4. THE COMPANY MANUAL HAS NO INFO TO REFER TO REGARDING THE PERFORMANCE LIMITS FOR ALT/DISTANCE WITH TEMP AND WT FACTORS. THE CTLRS VAGUE REPLY OF 'CONTINUE CLB' SUGGESTED THAT WE WERE CLRED TO CROSS AT AN ALT LESS THAN 14000'

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.

Air carrier large transport altitude deviation undershot altitude crossing restriction on SID from ont.