A departure MD80 experiences compass and HSI problems with both compasses and raw data on his VOR information because of magnetic interference near runway 13 at lga, ny.

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Attributes
ACN	598828
Time
Date	200311
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lga.airport
State Reference	NY
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	598828
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : warning lights other flight crewa other flight crewb
Resolutory Action	aircraft : equipment problem dissipated other
Supplementary
Problem Areas	ATC Human Performance FAA Environmental Factor Flight Crew Human Performance Aircraft Airport
Primary Problem	Airport

Narrative:

Location: lga, coney climb out. In reference to lga airport page warning magnetic deviations may occur on northwest end of runway 13, we had a heading light appear on takeoff followed by flight director display and raw data VOR information blanking from the display. We turned as directed on the departure but did not have a reliable VOR display or raw data needle to intercept the radial. The display came back erratically and we were able to follow the guidance in between blanking out. Approximately 10 mi after departure, all indications returned to normal, as they had been on the inbound flight and remainder of the flight. I suspect an electronic device in the cabin or an effect from the runway 13 magnetic deviation to cause the instrument blanking.

Original NASA ASRS Text

Title: A DEP MD80 EXPERIENCES COMPASS AND HSI PROBS WITH BOTH COMPASSES AND RAW DATA ON HIS VOR INFO BECAUSE OF MAGNETIC INTERFERENCE NEAR RWY 13 AT LGA, NY.

Narrative: LOCATION: LGA, CONEY CLBOUT. IN REF TO LGA ARPT PAGE WARNING MAGNETIC DEVS MAY OCCUR ON NW END OF RWY 13, WE HAD A HDG LIGHT APPEAR ON TKOF FOLLOWED BY FLT DIRECTOR DISPLAY AND RAW DATA VOR INFO BLANKING FROM THE DISPLAY. WE TURNED AS DIRECTED ON THE DEP BUT DID NOT HAVE A RELIABLE VOR DISPLAY OR RAW DATA NEEDLE TO INTERCEPT THE RADIAL. THE DISPLAY CAME BACK ERRATICALLY AND WE WERE ABLE TO FOLLOW THE GUIDANCE IN BTWN BLANKING OUT. APPROX 10 MI AFTER DEP, ALL INDICATIONS RETURNED TO NORMAL, AS THEY HAD BEEN ON THE INBOUND FLT AND REMAINDER OF THE FLT. I SUSPECT AN ELECTRONIC DEVICE IN THE CABIN OR AN EFFECT FROM THE RWY 13 MAGNETIC DEV TO CAUSE THE INST BLANKING.

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.