 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
The flight crew ignored the fact the GS and markers were OTS while conducting the ILS to runway 29. The flight crew generated their own DME criteria for the OM as the OM DME was not published.
| Attributes | |
| ACN | 339207 |
| Time | |
| Date | 199606 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : oak |
| State Reference | CA |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : oak |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 110 flight time total : 2900 flight time type : 170 |
| ASRS Report | 339207 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Coming into oak after departing boi, air carrier X was cleared for the ILS runway 29. The captain and first officer had missed that GS was out on NOTAMS and so didn't hear that GS, OM, MM, and im were OTS. Air carrier X shot the approach but had no way of knowing when to descend for step-down with OM OTS. After breaking out of the clouds at 1100 ft AGL we were too high to safely land. After missed approach, we again shot the ILS runway 29 to oak using approximately DME to ensure inside of OM and landed uneventfully. After debriefing, we decided that with no GS or markers we weren't legal to shoot that approach. All 3 crew members have submitted NASA reports. Callback conversation with reporter revealed the following information: the reporter stated he did not hear the ATIS clearly as it was breaking up. The crew confirmed prior to commencing the approach the GS and marker beacons were OTS. The controller inquired if the crew had a problem with that. The crew said no. The flight crew improvised a DME to approximately the OM position. The controller did not volunteer his service to call out when the flight crew was passing the OM which would have made the approach technically legal to localizer only minimums.
Original NASA ASRS Text
Title: THE FLC IGNORED THE FACT THE GS AND MARKERS WERE OTS WHILE CONDUCTING THE ILS TO RWY 29. THE FLC GENERATED THEIR OWN DME CRITERIA FOR THE OM AS THE OM DME WAS NOT PUBLISHED.
Narrative: COMING INTO OAK AFTER DEPARTING BOI, ACR X WAS CLRED FOR THE ILS RWY 29. THE CAPT AND FO HAD MISSED THAT GS WAS OUT ON NOTAMS AND SO DIDN'T HEAR THAT GS, OM, MM, AND IM WERE OTS. ACR X SHOT THE APCH BUT HAD NO WAY OF KNOWING WHEN TO DSND FOR STEP-DOWN WITH OM OTS. AFTER BREAKING OUT OF THE CLOUDS AT 1100 FT AGL WE WERE TOO HIGH TO SAFELY LAND. AFTER MISSED APCH, WE AGAIN SHOT THE ILS RWY 29 TO OAK USING APPROX DME TO ENSURE INSIDE OF OM AND LANDED UNEVENTFULLY. AFTER DEBRIEFING, WE DECIDED THAT WITH NO GS OR MARKERS WE WEREN'T LEGAL TO SHOOT THAT APCH. ALL 3 CREW MEMBERS HAVE SUBMITTED NASA RPTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE DID NOT HEAR THE ATIS CLRLY AS IT WAS BREAKING UP. THE CREW CONFIRMED PRIOR TO COMMENCING THE APCH THE GS AND MARKER BEACONS WERE OTS. THE CTLR INQUIRED IF THE CREW HAD A PROB WITH THAT. THE CREW SAID NO. THE FLC IMPROVISED A DME TO APPROX THE OM POS. THE CTLR DID NOT VOLUNTEER HIS SVC TO CALL OUT WHEN THE FLC WAS PASSING THE OM WHICH WOULD HAVE MADE THE APCH TECHNICALLY LEGAL TO LOC ONLY MINIMUMS.
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.