MD80 altitude deviation 800 ft near sax.

Attributes
ACN	455090
Time
Date	199911
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : sax.vor
State Reference	NJ
Altitude	msl bound lower : 15000 msl bound upper : 15800
Environment
Flight Conditions	VMC
Light	Daylight
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 : vacating altitude
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 11000 flight time type : 3000
ASRS Report	455090
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 13000 flight time type : 300
ASRS Report	454658
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : far
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Altitude set for 15000 ft on autoplt and was confirmed by captain, first officer flying. Captain went on PA to address passenger. I noticed aircraft passing through 15000 ft with altitude alerter set at 16000 ft. Disconnected autoplt and began descent and reconfirmed 15000 ft was the assigned altitude. Aircraft reached altitude of 15800 ft. ATC stated it didn't create any conflicts.

Original NASA ASRS Text

Title: MD80 ALTDEV 800 FT NEAR SAX.

Narrative: ALT SET FOR 15000 FT ON AUTOPLT AND WAS CONFIRMED BY CAPT, FO FLYING. CAPT WENT ON PA TO ADDRESS PAX. I NOTICED ACFT PASSING THROUGH 15000 FT WITH ALT ALERTER SET AT 16000 FT. DISCONNECTED AUTOPLT AND BEGAN DSCNT AND RECONFIRMED 15000 FT WAS THE ASSIGNED ALT. ACFT REACHED ALT OF 15800 FT. ATC STATED IT DIDN'T CREATE ANY CONFLICTS.

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.