A commercial instrument rated pilot flying a C182 in ZNY airspace failed to maintain altitude as ass...

Attributes
ACN	442480
Time
Date	199907
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : sfk.vor
State Reference	PA
Altitude	msl bound lower : 5700 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	general aviation : personal
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	cruise : level
Route In Use	enroute airway : v35.airway
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : private
Experience	flight time last 90 days : 37 flight time total : 2516 flight time type : 882
ASRS Report	442480
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued advisory
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

While on an IFR flight from amt to 7n1, I was informed 2 times by the ZNY controller that my altitude was 300 ft low. The first time was shortly after being xferred from ZOB to ZNY while at 7000 ft and the second time after descending to 5000 ft. On climb out from amt, I noticed that the kollsman window setting was not moving while trying to adjust the altimeter setting as prescribed by ZID while the altimeter needles did move. Since the WX was VFR en route, I elected to continue without making further altimeter adjustments. The altimeter remained within tolerance until ZNY. The altimeter had been overhauled within the past 6 months and had been sent back for correction and repair. Upon landing, it was determined that the altitude was off by 200 ft.

Original NASA ASRS Text

Title: A COMMERCIAL INST RATED PLT FLYING A C182 IN ZNY AIRSPACE FAILED TO MAINTAIN ALT AS ASSIGNED BY ATC.

Narrative: WHILE ON AN IFR FLT FROM AMT TO 7N1, I WAS INFORMED 2 TIMES BY THE ZNY CTLR THAT MY ALT WAS 300 FT LOW. THE FIRST TIME WAS SHORTLY AFTER BEING XFERRED FROM ZOB TO ZNY WHILE AT 7000 FT AND THE SECOND TIME AFTER DSNDING TO 5000 FT. ON CLBOUT FROM AMT, I NOTICED THAT THE KOLLSMAN WINDOW SETTING WAS NOT MOVING WHILE TRYING TO ADJUST THE ALTIMETER SETTING AS PRESCRIBED BY ZID WHILE THE ALTIMETER NEEDLES DID MOVE. SINCE THE WX WAS VFR ENRTE, I ELECTED TO CONTINUE WITHOUT MAKING FURTHER ALTIMETER ADJUSTMENTS. THE ALTIMETER REMAINED WITHIN TOLERANCE UNTIL ZNY. THE ALTIMETER HAD BEEN OVERHAULED WITHIN THE PAST 6 MONTHS AND HAD BEEN SENT BACK FOR CORRECTION AND REPAIR. UPON LNDG, IT WAS DETERMINED THAT THE ALT WAS OFF BY 200 FT.

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.

A commercial instrument rated pilot flying a C182 in ZNY airspace failed to maintain altitude as assigned by ATC.