B757 crew did not make a descent crossing restr.

Attributes
ACN	421100
Time
Date	199811
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : stw airport : jfk
State Reference	NY
Altitude	msl bound lower : 23000 msl bound upper : 23400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Navigation In Use	Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 120 flight time total : 13000 flight time type : 3000
ASRS Report	421100
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	altitude deviation : undershoot other anomaly other
Independent Detector	other flight crewa
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

Lendy 4 arrival into jfk. Clearance to cross jenno at FL230. We immediately started our VNAV descent. VNAV right on schedule for the descent. Tailwinds of 100+ KTS. Then ATC requested we slow to 290 KTS. We set 290 KTS and started to slow when we realized that we could not make jenno at FL230. We advised ATC and they said to make jenno at FL230, disregard the 290 KTS, then slow to 290 KTS after jenno. Now, within the strong tailwind, maximum speed and speed brakes, and the disruption of the VNAV profile descent, we crossed jenno approximately 400 ft high. Solutions: one would be to build a waypoint +/-3 NM this side of jenno to cross at FL230 with strong tailwinds. The other solution would have been for ATC to recognize this strong tailwind and to give us the descent clearance earlier.

Original NASA ASRS Text

Title: B757 CREW DID NOT MAKE A DSCNT XING RESTR.

Narrative: LENDY 4 ARR INTO JFK. CLRNC TO CROSS JENNO AT FL230. WE IMMEDIATELY STARTED OUR VNAV DSCNT. VNAV RIGHT ON SCHEDULE FOR THE DSCNT. TAILWINDS OF 100+ KTS. THEN ATC REQUESTED WE SLOW TO 290 KTS. WE SET 290 KTS AND STARTED TO SLOW WHEN WE REALIZED THAT WE COULD NOT MAKE JENNO AT FL230. WE ADVISED ATC AND THEY SAID TO MAKE JENNO AT FL230, DISREGARD THE 290 KTS, THEN SLOW TO 290 KTS AFTER JENNO. NOW, WITHIN THE STRONG TAILWIND, MAX SPD AND SPD BRAKES, AND THE DISRUPTION OF THE VNAV PROFILE DSCNT, WE CROSSED JENNO APPROX 400 FT HIGH. SOLUTIONS: ONE WOULD BE TO BUILD A WAYPOINT +/-3 NM THIS SIDE OF JENNO TO CROSS AT FL230 WITH STRONG TAILWINDS. THE OTHER SOLUTION WOULD HAVE BEEN FOR ATC TO RECOGNIZE THIS STRONG TAILWIND AND TO GIVE US THE DSCNT CLRNC EARLIER.

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.