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Instructor on instrument training flight encountered ice and was unable to maintain MEA. Left icing area and canceled IFR clearance.
| Attributes | |
| ACN | 439292 |
| Time | |
| Date | 199906 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ast.vor |
| State Reference | OR |
| Altitude | msl bound lower : 4600 msl bound upper : 6300 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Ice |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zse.artcc |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : v187.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor |
| Qualification | pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 15 flight time total : 415 flight time type : 250 |
| ASRS Report | 439292 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter : weather other anomaly other |
| Resolutory Action | flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Weather |
Narrative:
I was unable to maintain MEA because of reaccumulation on the wings. The briefing showed that I would be just under the freezing level, but when I got to 5000 ft a little past olm VOR on V187, frost began to accumulate on the strut of the aircraft. I did not feel it was a critical situation (my IFR experience was only 7 hours at the time) but more ice accumulated and then I was informed of a 1 hour holding delay to my destination after about 30 mins. The tops were reported at 6300 ft so I asked for 7000 ft but I was only able to climb to 6300 ft, but did not break out. The climb exposed the bottom of the wing and quite a bit of ice accumulated. My aircraft slowly descended to 4600 ft (5000 ft MEA) despite all efforts. An opening was found in the broken clouds. I canceled IFR and descended VFR. Ice melted quickly and the flight was completed VFR. I should have requested higher at the first trace of ice to get on top.
Original NASA ASRS Text
Title: INSTRUCTOR ON INST TRAINING FLT ENCOUNTERED ICE AND WAS UNABLE TO MAINTAIN MEA. LEFT ICING AREA AND CANCELED IFR CLRNC.
Narrative: I WAS UNABLE TO MAINTAIN MEA BECAUSE OF REACCUMULATION ON THE WINGS. THE BRIEFING SHOWED THAT I WOULD BE JUST UNDER THE FREEZING LEVEL, BUT WHEN I GOT TO 5000 FT A LITTLE PAST OLM VOR ON V187, FROST BEGAN TO ACCUMULATE ON THE STRUT OF THE ACFT. I DID NOT FEEL IT WAS A CRITICAL SIT (MY IFR EXPERIENCE WAS ONLY 7 HRS AT THE TIME) BUT MORE ICE ACCUMULATED AND THEN I WAS INFORMED OF A 1 HR HOLDING DELAY TO MY DEST AFTER ABOUT 30 MINS. THE TOPS WERE RPTED AT 6300 FT SO I ASKED FOR 7000 FT BUT I WAS ONLY ABLE TO CLB TO 6300 FT, BUT DID NOT BREAK OUT. THE CLB EXPOSED THE BOTTOM OF THE WING AND QUITE A BIT OF ICE ACCUMULATED. MY ACFT SLOWLY DSNDED TO 4600 FT (5000 FT MEA) DESPITE ALL EFFORTS. AN OPENING WAS FOUND IN THE BROKEN CLOUDS. I CANCELED IFR AND DSNDED VFR. ICE MELTED QUICKLY AND THE FLT WAS COMPLETED VFR. I SHOULD HAVE REQUESTED HIGHER AT THE FIRST TRACE OF ICE TO GET ON TOP.
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.