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Pit approach controller alerted lear jet flight crew of minimum safe altitude warning approaching the outer marker for a localizer approach. Flight crew noticed navigation flags indicating inoperative.
| Attributes | |
| ACN | 562893 |
| Time | |
| Date | 200210 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | PA |
| Altitude | msl single value : 2800 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Gates Learjet Corp Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | ils localizer & glide slope : 28l |
| Flight Phase | descent : approach landing : go around |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 125 flight time total : 2900 flight time type : 140 |
| ASRS Report | 562895 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | atc equipment : msaw other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert flight crew : executed missed approach |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Aircraft Airspace Structure Environmental Factor Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
On a tight vector (down wind) we were given a left turn to join runway 28L localizer 'maintain 3000 ft until established on runway 28L localizer cleared for approach.' following localizer and G/south indication on HSI, both were centered. Approach notified with 'a low altitude alert 2600 ft.' at this point my navigation equipment flagged and became inoperative. Aircraft was at 2800 ft at the outer marker. I initiated a go around and ATC vectored us to try again. My equipment was flagged for the second approach. I gave control to my co-pilot for the second approach and landing. Aircraft in front of us on approach landed approximately the same time we were at the outer marker. Field was 600 ovc 7 mile visibility. This was the third approach of the day. Equipment, was normal for approach 4, 5, 6, and 7. Spacing between aircraft was unknown but sequence of my aircraft was #2.
Original NASA ASRS Text
Title: PIT APCH CTLR ALERTED LEAR JET FLC OF MINIMUM SAFE ALT WARNING APCHING THE OUTER MARKER FOR A LOC APCH. FLC NOTICED NAV FLAGS INDICATING INOP.
Narrative: ON A TIGHT VECTOR (DOWN WIND) WE WERE GIVEN A L TURN TO JOIN RWY 28L LOC 'MAINTAIN 3000 FT UNTIL ESTABLISHED ON RWY 28L LOC CLRED FOR APCH.' FOLLOWING LOC AND G/S INDICATION ON HSI, BOTH WERE CTRED. APCH NOTIFIED WITH 'A LOW ALT ALERT 2600 FT.' AT THIS POINT MY NAV EQUIP FLAGGED AND BECAME INOP. ACFT WAS AT 2800 FT AT THE OUTER MARKER. I INITIATED A GAR AND ATC VECTORED US TO TRY AGAIN. MY EQUIP WAS FLAGGED FOR THE SECOND APCH. I GAVE CTL TO MY CO-PLT FOR THE SECOND APCH AND LNDG. ACFT IN FRONT OF US ON APCH LANDED APPROX THE SAME TIME WE WERE AT THE OUTER MARKER. FIELD WAS 600 OVC 7 MILE VISIBILITY. THIS WAS THE THIRD APCH OF THE DAY. EQUIP, WAS NORMAL FOR APCH 4, 5, 6, AND 7. SPACING BETWEEN ACFT WAS UNKNOWN BUT SEQUENCE OF MY ACFT WAS #2.
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.