A B722 crew, on a visual approach to oak, overshot assigned altitude restr.

Attributes
ACN	544371
Time
Date	200204
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : oak.vor
State Reference	CA
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : o90.tracon
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 29 other vortac
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 15 flight time total : 14500 flight time type : 2500
ASRS Report	544371
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Airport Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Going into oak, we accepted a visual approach for runway 29 with the usual restr 'maintain 2000 ft or above till oak 6 DME.' this restr places the aircraft 2 dots high on the GS at that point. At the same time we also got an instrument comparitor light indicating an out of limits difference in pitch between the 2 ADI's. While trying to determine which ADI was out of limits we forgot about the '2000 ft or above the 6 DME' restr and just rode in on the GS. This restr at oak is a bad idea to start with, it's really hard to return to a stabilized approach after being 2 dots high on GS at OM.

Original NASA ASRS Text

Title: A B722 CREW, ON A VISUAL APCH TO OAK, OVERSHOT ASSIGNED ALT RESTR.

Narrative: GOING INTO OAK, WE ACCEPTED A VISUAL APCH FOR RWY 29 WITH THE USUAL RESTR 'MAINTAIN 2000 FT OR ABOVE TILL OAK 6 DME.' THIS RESTR PLACES THE ACFT 2 DOTS HIGH ON THE GS AT THAT POINT. AT THE SAME TIME WE ALSO GOT AN INST COMPARITOR LIGHT INDICATING AN OUT OF LIMITS DIFFERENCE IN PITCH BTWN THE 2 ADI'S. WHILE TRYING TO DETERMINE WHICH ADI WAS OUT OF LIMITS WE FORGOT ABOUT THE '2000 FT OR ABOVE THE 6 DME' RESTR AND JUST RODE IN ON THE GS. THIS RESTR AT OAK IS A BAD IDEA TO START WITH, IT'S REALLY HARD TO RETURN TO A STABILIZED APCH AFTER BEING 2 DOTS HIGH ON GS AT OM.

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.