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Government small transport aircraft has HSI malfunction resulting in heading deviation taking aircraft into P56. Missed approach executed.
| Attributes | |
| ACN | 358947 |
| Time | |
| Date | 199701 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | msl bound lower : 1000 msl bound upper : 1000 |
| Aircraft 1 | |
| Controlling Facilities | tower : dca |
| Operator | other |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 70 flight time total : 13000 flight time type : 5000 |
| ASRS Report | 358947 |
| Person 2 | |
| Affiliation | government other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented other other |
| Consequence | Other Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
Narrative:
Instrument approach to dca. Radar vector to intercept lda approach, turned over to tower. We were informed that we were east of course in prohibited area, and asked to execute a missed approach. In final phase of approach, lost signal flag in HSI intermittently appeared. Missed approach. We were then given radar vectors for a second approach. Again loss of signal flags appeared on pilot's and copilot's instruments. Ground contact was made and we were able to proceed visually and land. The following day the aircraft avionics were tested. It was found that we had a defective navigation antenna, that we are having replaced.
Original NASA ASRS Text
Title: GOV SMT ACFT HAS HSI MALFUNCTION RESULTING IN HDG DEV TAKING ACFT INTO P56. MISSED APCH EXECUTED.
Narrative: INST APCH TO DCA. RADAR VECTOR TO INTERCEPT LDA APCH, TURNED OVER TO TWR. WE WERE INFORMED THAT WE WERE E OF COURSE IN PROHIBITED AREA, AND ASKED TO EXECUTE A MISSED APCH. IN FINAL PHASE OF APCH, LOST SIGNAL FLAG IN HSI INTERMITTENTLY APPEARED. MISSED APCH. WE WERE THEN GIVEN RADAR VECTORS FOR A SECOND APCH. AGAIN LOSS OF SIGNAL FLAGS APPEARED ON PLT'S AND COPLT'S INSTS. GND CONTACT WAS MADE AND WE WERE ABLE TO PROCEED VISUALLY AND LAND. THE FOLLOWING DAY THE ACFT AVIONICS WERE TESTED. IT WAS FOUND THAT WE HAD A DEFECTIVE NAV ANTENNA, THAT WE ARE HAVING REPLACED.
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.