Heading track position deviation during an aircraft equipment problem situation.

Attributes
ACN	297939
Time
Date	199502
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : sie
State Reference	NJ
Altitude	msl bound lower : 19000 msl bound upper : 19000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other 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 : flight engineer pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 3000
ASRS Report	297939
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I had clearance to FL190 and a clearance to kennedy jfk airport via the camrin arrival. During the descent the aircraft began 'porpoising' quite badly so I disconnected the autoplt and autothrottles. After stabilizing the aircraft and leveling off at FL190 I realized that we had gone approximately 15 mi past sea isle VOR on a heading of approximately 230 degrees instead of the 249 degree radial as depicted on the camrin arrival chart. Center gave us a turn to intercept the 249 degree radial.

Original NASA ASRS Text

Title: HDG TRACK POS DEV DURING AN ACFT EQUIP PROB SIT.

Narrative: I HAD CLRNC TO FL190 AND A CLRNC TO KENNEDY JFK ARPT VIA THE CAMRIN ARR. DURING THE DSCNT THE ACFT BEGAN 'PORPOISING' QUITE BADLY SO I DISCONNECTED THE AUTOPLT AND AUTOTHROTTLES. AFTER STABILIZING THE ACFT AND LEVELING OFF AT FL190 I REALIZED THAT WE HAD GONE APPROX 15 MI PAST SEA ISLE VOR ON A HDG OF APPROX 230 DEGS INSTEAD OF THE 249 DEG RADIAL AS DEPICTED ON THE CAMRIN ARR CHART. CTR GAVE US A TURN TO INTERCEPT THE 249 DEG RADIAL.

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.