Flight crew of C750 is pressured by company flight operations management to use performance charts f...

Attributes
ACN	644875
Time
Date	200501
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : teb.airport
State Reference	NJ
Altitude	agl single value : 0
Environment
Weather Elements	Snow
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Citation X
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 100 flight time total : 13000 flight time type : 2000
ASRS Report	644875
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Events
Anomaly	ground encounters other non adherence : published procedure non adherence : company policies other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Aircraft Company Airport
Primary Problem	Company

Narrative:

During preflight planning for takeoff performance numbers; the PIC and I checked the numbers for runway length versus takeoff distance required in the airplane manual and the onboard computer and corrected for compacted snow; as was the condition of runway 6 at teb. The takeoff distance at about XA00 exceeded the runway length when the aircraft flight manual compacted snow correction was applied. We discussed this with the company program manager and he stated our numbers were incorrect; we needed to use the back page of the chart to correct for compacted snow while also took reverse thrust into affect. We argued that this was not correct; we were threatened with a trip the next day to ZZZ for a reprimand and performance re-training if we did not use the correction chart in the manual for compact snow with reverse thrust. We used these numbers some 5 hours later when our passenger showed late. At that time the headwind component had changed to a greater number; so I feel we were legal for takeoff by then. Not using the correction chart for compacted snow with thrust reverse (which this chart is prohibited by our fom/operations manual) which we discovered later was the true case. We also took 1 less passenger than originally planned.

Original NASA ASRS Text

Title: FLT CREW OF C750 IS PRESSURED BY COMPANY FLT OPS MGMNT TO USE PERFORMANCE CHARTS FOR COMPACTED SNOW TKOF FROM TEB CONTRARY TO COMPANY POLICY.

Narrative: DURING PREFLT PLANNING FOR TKOF PERFORMANCE NUMBERS; THE PIC AND I CHKED THE NUMBERS FOR RWY LENGTH VERSUS TKOF DISTANCE REQUIRED IN THE AIRPLANE MANUAL AND THE ONBOARD COMPUTER AND CORRECTED FOR COMPACTED SNOW; AS WAS THE CONDITION OF RWY 6 AT TEB. THE TKOF DISTANCE AT ABOUT XA00 EXCEEDED THE RWY LENGTH WHEN THE ACFT FLT MANUAL COMPACTED SNOW CORRECTION WAS APPLIED. WE DISCUSSED THIS WITH THE COMPANY PROGRAM MGR AND HE STATED OUR NUMBERS WERE INCORRECT; WE NEEDED TO USE THE BACK PAGE OF THE CHART TO CORRECT FOR COMPACTED SNOW WHILE ALSO TOOK REVERSE THRUST INTO AFFECT. WE ARGUED THAT THIS WAS NOT CORRECT; WE WERE THREATENED WITH A TRIP THE NEXT DAY TO ZZZ FOR A REPRIMAND AND PERFORMANCE RE-TRAINING IF WE DID NOT USE THE CORRECTION CHART IN THE MANUAL FOR COMPACT SNOW WITH REVERSE THRUST. WE USED THESE NUMBERS SOME 5 HRS LATER WHEN OUR PAX SHOWED LATE. AT THAT TIME THE HEADWIND COMPONENT HAD CHANGED TO A GREATER NUMBER; SO I FEEL WE WERE LEGAL FOR TKOF BY THEN. NOT USING THE CORRECTION CHART FOR COMPACTED SNOW WITH THRUST REVERSE (WHICH THIS CHART IS PROHIBITED BY OUR FOM/OPS MANUAL) WHICH WE DISCOVERED LATER WAS THE TRUE CASE. WE ALSO TOOK 1 LESS PAX THAN ORIGINALLY PLANNED.

Data retrieved from NASA's ASRS site as of January 2009 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.

Flight crew of C750 is pressured by company flight operations management to use performance charts for compacted snow takeoff from teb contrary to company policy.