Altitude bust during IAP ILS approach. Aircraft confign on autoplt for initial phase of approach.

Attributes
ACN	293376
Time
Date	199501
Day	Tue
Place
Locale Reference	airport : bur
State Reference	CA
Altitude	msl bound lower : 1500 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bur tower : day
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other descent : approach landing : missed approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	293376
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : provided flight assist controller : issued new clearance other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Below GS approach, controller directed go around into bur due to aircraft descending below GS. WX 400/2 moderate turbulence throughout approach. The descent occurred due to first officer setting missed approach altitude in the altitude alert window prior to intercepting GS. Captain called out marker altitude but we both missed the altitude error. Controller directed go around. Multiple airspeed changes directed through the approach along with the moderate turbulence were factors in the missed altitude. At the marker 7 multiple airspeed changes directed throughout the approach.

Original NASA ASRS Text

Title: ALT BUST DURING IAP ILS APCH. ACFT CONFIGN ON AUTOPLT FOR INITIAL PHASE OF APCH.

Narrative: BELOW GS APCH, CTLR DIRECTED GAR INTO BUR DUE TO ACFT DSNDING BELOW GS. WX 400/2 MODERATE TURB THROUGHOUT APCH. THE DSCNT OCCURRED DUE TO FO SETTING MISSED APCH ALT IN THE ALT ALERT WINDOW PRIOR TO INTERCEPTING GS. CAPT CALLED OUT MARKER ALT BUT WE BOTH MISSED THE ALT ERROR. CTLR DIRECTED GAR. MULTIPLE AIRSPD CHANGES DIRECTED THROUGH THE APCH ALONG WITH THE MODERATE TURB WERE FACTORS IN THE MISSED ALT. AT THE MARKER 7 MULTIPLE AIRSPD CHANGES DIRECTED THROUGHOUT THE APCH.

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.