Altitude deviation altitude overshot in descent. PIC, PNF, presets qnh from qne at FL200 instead of waiting until aircraft is descending from FL180. Aircraft is on FMC with first officer programming approach procedure at destination airport.

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Attributes
ACN	354281
Time
Date	199611
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : lga airport : jfk
State Reference	NY
Altitude	msl bound lower : 18600 msl bound upper : 19000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 4000
ASRS Report	354281
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 95 flight time total : 8100 flight time type : 3500
ASRS Report	354010
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : far non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During descent from FL410 on lendy 4 arrival to jfk, was cleared to cross lendy at FL190 and 250 KTS. First officer was flying aircraft and programming FMC for a VOR-DME approach to runway 22L at jfk. As PNF I was handling communications, cabin PA and checklist. Passing through FL200 I prematurely set the center and captain's altimeter to local barometer (30.40). Procedure and my normal habit pattern is to reset the altimeters at transition altitude (FL180). The aircraft was leveled at FL186 as first officer recognized the error. Altimeters were reset to 29.92 and the aircraft returned to FL190. ATC made no mention of the altitude overshoot.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT IN DSCNT. PIC, PNF, PRESETS QNH FROM QNE AT FL200 INSTEAD OF WAITING UNTIL ACFT IS DSNDING FROM FL180. ACFT IS ON FMC WITH FO PROGRAMMING APCH PROC AT DEST ARPT.

Narrative: DURING DSCNT FROM FL410 ON LENDY 4 ARR TO JFK, WAS CLRED TO CROSS LENDY AT FL190 AND 250 KTS. FO WAS FLYING ACFT AND PROGRAMMING FMC FOR A VOR-DME APCH TO RWY 22L AT JFK. AS PNF I WAS HANDLING COMS, CABIN PA AND CHKLIST. PASSING THROUGH FL200 I PREMATURELY SET THE CTR AND CAPT'S ALTIMETER TO LCL BAROMETER (30.40). PROC AND MY NORMAL HABIT PATTERN IS TO RESET THE ALTIMETERS AT TRANSITION ALT (FL180). THE ACFT WAS LEVELED AT FL186 AS FO RECOGNIZED THE ERROR. ALTIMETERS WERE RESET TO 29.92 AND THE ACFT RETURNED TO FL190. ATC MADE NO MENTION OF THE ALT OVERSHOOT.

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.