Altitude deviation altitude overshot during descent in IAP ILS approach CAT ii.

Attributes
ACN	228154
Time
Date	199212
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : okc
State Reference	OK
Altitude	agl bound lower : 1400 agl bound upper : 1700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : okc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	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 : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 160 flight time total : 12000 flight time type : 7000
ASRS Report	228154
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : instrument pilot : commercial
Experience	flight time last 90 days : 140 flight time total : 8500 flight time type : 900
ASRS Report	228162
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	atc equipment other atc equipment : unspecified other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During a CAT ii approach to 35R at okc, the autoplt was engaged with the first officer flying. Crossing the OM the captain switched from approach control to the tower. It was then the captain called out the aircraft was below the GS. The crew was working on the problem when the tower advised the crew of an altitude alert, which the crew confirmed. A missed approach was initiated, and another approach was made with no further problems with the aircraft.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT DURING DSCNT IN IAP ILS APCH CAT II.

Narrative: DURING A CAT II APCH TO 35R AT OKC, THE AUTOPLT WAS ENGAGED WITH THE FO FLYING. XING THE OM THE CAPT SWITCHED FROM APCH CTL TO THE TWR. IT WAS THEN THE CAPT CALLED OUT THE ACFT WAS BELOW THE GS. THE CREW WAS WORKING ON THE PROBLEM WHEN THE TWR ADVISED THE CREW OF AN ALT ALERT, WHICH THE CREW CONFIRMED. A MISSED APCH WAS INITIATED, AND ANOTHER APCH WAS MADE WITH NO FURTHER PROBLEMS WITH THE ACFT.

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.