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An small aircraft pilot may have had an near midair collision while having an aircraft equipment problem precessing directional gyro. Less than standard separation.
| Attributes | |
| ACN | 339908 |
| Time | |
| Date | 199606 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : cvg |
| State Reference | OH |
| Altitude | msl bound lower : 5500 msl bound upper : 5500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cvg tower : mtn |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 7000 |
| ASRS Report | 339908 |
| Person 2 | |
| Affiliation | Other |
| Function | observation : passenger |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : nmac inflight encounter : weather non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other other : unspecified cockpit |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Passenger saw aircraft pass under our aircraft, I did not see. Cvg approach told us to maintain 'present heading' at 5500 ft. Very hazy. Compass card off and moving. I tried to maintain directional gyro heading and wet compass heading in light turbulence. Cvg approach control, after aircraft passed under us, asked what is heading, I responded 040-050 degrees. He said 'what were you last assigned?' I said 'present heading.' he said 'what did the last controller tell you to maintain?' I said '010 degrees, and my compass card is off from compass.' nothing else was said, but I could tell controller was annoyed.
Original NASA ASRS Text
Title: AN SMA PLT MAY HAVE HAD AN NMAC WHILE HAVING AN ACFT EQUIP PROB PRECESSING DIRECTIONAL GYRO. LTSS.
Narrative: PAX SAW ACFT PASS UNDER OUR ACFT, I DID NOT SEE. CVG APCH TOLD US TO MAINTAIN 'PRESENT HDG' AT 5500 FT. VERY HAZY. COMPASS CARD OFF AND MOVING. I TRIED TO MAINTAIN DIRECTIONAL GYRO HDG AND WET COMPASS HDG IN LIGHT TURB. CVG APCH CTL, AFTER ACFT PASSED UNDER US, ASKED WHAT IS HDG, I RESPONDED 040-050 DEGS. HE SAID 'WHAT WERE YOU LAST ASSIGNED?' I SAID 'PRESENT HDG.' HE SAID 'WHAT DID THE LAST CTLR TELL YOU TO MAINTAIN?' I SAID '010 DEGS, AND MY COMPASS CARD IS OFF FROM COMPASS.' NOTHING ELSE WAS SAID, BUT I COULD TELL CTLR WAS ANNOYED.
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.