Unable to maintain altitude account anti-icing requirements.

Attributes
ACN	219497
Time
Date	199208
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : lhy
State Reference	PA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute airway : j36
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 5950 flight time type : 200
ASRS Report	219497
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

WX in entire new york area poor. New york center saturated - - aircraft and controller workload. On climb to FL350 given different vector heading every few mins. Instructed to maintain 250 KTS throughout climb from approximately 12000 to FL350. Passing FL310 told to give best rate of climb to FL350 for company traffic. Complied. Upon reaching FL350 could not accelerate due to engine and wing anti-ice requirements. Required immediate descent to increase airspeed and advised ATC as descent started. ATC gave another aircraft a vector and acknowledged our descent. Situation arose due to a required climb airspeed by ATC due to excessive traffic and the subsequent aircraft anti- ice requirements due to WX. The maximum climb ATC requirement put us behind power curve. Feel ATC should not sequence traffic to require maximum climb rates if they already have traffic back at 250 KTS in the climb.

Original NASA ASRS Text

Title: UNABLE TO MAINTAIN ALT ACCOUNT ANTI-ICING REQUIREMENTS.

Narrative: WX IN ENTIRE NEW YORK AREA POOR. NEW YORK CTR SATURATED - - ACFT AND CTLR WORKLOAD. ON CLB TO FL350 GIVEN DIFFERENT VECTOR HDG EVERY FEW MINS. INSTRUCTED TO MAINTAIN 250 KTS THROUGHOUT CLB FROM APPROX 12000 TO FL350. PASSING FL310 TOLD TO GIVE BEST RATE OF CLB TO FL350 FOR COMPANY TFC. COMPLIED. UPON REACHING FL350 COULD NOT ACCELERATE DUE TO ENG AND WING ANTI-ICE REQUIREMENTS. REQUIRED IMMEDIATE DSCNT TO INCREASE AIRSPD AND ADVISED ATC AS DSCNT STARTED. ATC GAVE ANOTHER ACFT A VECTOR AND ACKNOWLEDGED OUR DSCNT. SITUATION AROSE DUE TO A REQUIRED CLB AIRSPD BY ATC DUE TO EXCESSIVE TFC AND THE SUBSEQUENT ACFT ANTI- ICE REQUIREMENTS DUE TO WX. THE MAX CLB ATC REQUIREMENT PUT US BEHIND PWR CURVE. FEEL ATC SHOULD NOT SEQUENCE TFC TO REQUIRE MAX CLB RATES IF THEY ALREADY HAVE TFC BACK AT 250 KTS IN THE CLB.

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.