Descended 1000' below outer marker altitude account inoperative ADF.

Attributes
ACN	94508
Time
Date	198809
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mci
State Reference	MO
Altitude	msl bound lower : 1320 msl bound upper : 2400
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mci tower : mci
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 210 flight time total : 5500 flight time type : 250
ASRS Report	94508
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATIS was copied with 2 approachs in use. The flight was being vectored onto 1 DOT localizer by kc approach. Upon being turned onto final at 2400', we were advised G/south and marker were OTS. We selected dotte 359 do on #2 ADF prior to being vectored by approach. Upon intercepting localizer noticed ADF pointer was showing station passage and proceeded to minimums of 1320' MSL. PNF never switched to tower we landed with no incident. Upon contacting ground we were advised no one was able to communication with us and we were approximately 1000' low outside dotte LOM, and if we received the marker. We said we were able to identify station passage by ADF pointer. There was no further discussion. Upon checking all radios, discovered #2 ADF was not operational and pointer was frozen on tail of aircraft. Contributing factors were not discussing ATIS, not identing all radios, pilot's relative time in type of aircraft (PNF approximately 30 hours) and new autoplt system to him. PNF was caught up with checking PF therefore never switched to tower. Problem corrected by extended anticipation of which approach is going to be used and discussing it thoroughly with NAVAID identify during approach briefing.

Original NASA ASRS Text

Title: DESCENDED 1000' BELOW OUTER MARKER ALT ACCOUNT INOPERATIVE ADF.

Narrative: ATIS WAS COPIED WITH 2 APCHS IN USE. THE FLT WAS BEING VECTORED ONTO 1 DOT LOC BY KC APCH. UPON BEING TURNED ONTO FINAL AT 2400', WE WERE ADVISED G/S AND MARKER WERE OTS. WE SELECTED DOTTE 359 DO ON #2 ADF PRIOR TO BEING VECTORED BY APCH. UPON INTERCEPTING LOC NOTICED ADF POINTER WAS SHOWING STATION PASSAGE AND PROCEEDED TO MINIMUMS OF 1320' MSL. PNF NEVER SWITCHED TO TWR WE LANDED WITH NO INCIDENT. UPON CONTACTING GND WE WERE ADVISED NO ONE WAS ABLE TO COM WITH US AND WE WERE APPROX 1000' LOW OUTSIDE DOTTE LOM, AND IF WE RECEIVED THE MARKER. WE SAID WE WERE ABLE TO IDENT STATION PASSAGE BY ADF POINTER. THERE WAS NO FURTHER DISCUSSION. UPON CHKING ALL RADIOS, DISCOVERED #2 ADF WAS NOT OPERATIONAL AND POINTER WAS FROZEN ON TAIL OF ACFT. CONTRIBUTING FACTORS WERE NOT DISCUSSING ATIS, NOT IDENTING ALL RADIOS, PLT'S RELATIVE TIME IN TYPE OF ACFT (PNF APPROX 30 HRS) AND NEW AUTOPLT SYS TO HIM. PNF WAS CAUGHT UP WITH CHKING PF THEREFORE NEVER SWITCHED TO TWR. PROB CORRECTED BY EXTENDED ANTICIPATION OF WHICH APCH IS GOING TO BE USED AND DISCUSSING IT THOROUGHLY WITH NAVAID IDENT DURING APCH BRIEFING.

Data retrieved from NASA's ASRS site as of August 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.