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Beech B95 pilot filed and flew IFR on top over rugged mountainous terrain causing handoff ARTCC radar controller to criticize pilot of the dangers of this type of operation.
| Attributes | |
| ACN | 526381 |
| Time | |
| Date | 200110 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zdv.artcc |
| Altitude | msl single value : 11500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | general aviation : personal |
| Make Model Name | Baron 55/Cochise |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : v4.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 45 flight time total : 10000 flight time type : 850 |
| ASRS Report | 526381 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | inflight encounter : weather other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Environmental Factor Flight Crew Human Performance Weather ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Flight conditions and terrain were ideal for VFR-on-top on IFR flight plan from twin falls, identification, to greely, co. ZDV gave me instructions and route V-4 to be responsible for my own terrain clearance. I was deviating south of the airway V-4 to do this. Center gave me another center controller approaching laramie who told me over the air how dangerous and fool hardy I was. The center was very busy at the time so communications or lack of was a factor. I think the second ZDV controller is not familiar with VFR on top operation. Granted given the terrain and oxygen required at the MEA, this procedure sometimes upsets the controller. I was on oxygen IFR on top. There was no conflict of traffic.
Original NASA ASRS Text
Title: BEECH B95 PLT FILED AND FLEW IFR ON TOP OVER RUGGED MOUNTAINOUS TERRAIN CAUSING HDOF ARTCC RADAR CTLR TO CRITICIZE PLT OF THE DANGERS OF THIS TYPE OF OP.
Narrative: FLT CONDITIONS AND TERRAIN WERE IDEAL FOR VFR-ON-TOP ON IFR FLT PLAN FROM TWIN FALLS, ID, TO GREELY, CO. ZDV GAVE ME INSTRUCTIONS AND RTE V-4 TO BE RESPONSIBLE FOR MY OWN TERRAIN CLRNC. I WAS DEVIATING S OF THE AIRWAY V-4 TO DO THIS. CTR GAVE ME ANOTHER CTR CTLR APCHING LARAMIE WHO TOLD ME OVER THE AIR HOW DANGEROUS AND FOOL HARDY I WAS. THE CTR WAS VERY BUSY AT THE TIME SO COMS OR LACK OF WAS A FACTOR. I THINK THE SECOND ZDV CTLR IS NOT FAMILIAR WITH VFR ON TOP OP. GRANTED GIVEN THE TERRAIN AND OXYGEN REQUIRED AT THE MEA, THIS PROC SOMETIMES UPSETS THE CTLR. I WAS ON OXYGEN IFR ON TOP. THERE WAS NO CONFLICT OF TFC.
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.