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Pilot of light twin operating VFR on top with IFR clrncs is unaware of requirement to maintain minimum IFR altitudes.
| Attributes | |
| ACN | 114922 |
| Time | |
| Date | 198906 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : apa |
| State Reference | CO |
| Altitude | msl bound lower : 14500 msl bound upper : 14500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 100 flight time total : 17500 flight time type : 75 |
| ASRS Report | 114922 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence other other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Deviation from ATC clearance. VFR on top. On this flight I was maintaining VFR on top on an IFR clearance maintaining my own terrain clearance unaware that I was required to maintain minimum IFR altitudes as stipulated in the aim paragraph 266,E3. This was pointed out to me by a friend and I must say I don't think it has always been a requirement to maintain minimum IFR altitudes VFR on top. When did it change?
Original NASA ASRS Text
Title: PLT OF LIGHT TWIN OPERATING VFR ON TOP WITH IFR CLRNCS IS UNAWARE OF REQUIREMENT TO MAINTAIN MINIMUM IFR ALTS.
Narrative: DEVIATION FROM ATC CLRNC. VFR ON TOP. ON THIS FLT I WAS MAINTAINING VFR ON TOP ON AN IFR CLRNC MAINTAINING MY OWN TERRAIN CLRNC UNAWARE THAT I WAS REQUIRED TO MAINTAIN MINIMUM IFR ALTS AS STIPULATED IN THE AIM PARAGRAPH 266,E3. THIS WAS POINTED OUT TO ME BY A FRIEND AND I MUST SAY I DON'T THINK IT HAS ALWAYS BEEN A REQUIREMENT TO MAINTAIN MINIMUM IFR ALTS VFR ON TOP. WHEN DID IT CHANGE?
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.