|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : rka|
|Altitude||msl bound lower : 10000|
msl bound upper : 10000
|Controlling Facilities||artcc : zbw|
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Fixed Gear|
|Flight Phase||climbout : intermediate altitude|
|Function||instruction : instructor|
oversight : pic
|Qualification||pilot : cfi|
pilot : instrument
pilot : commercial
|Experience||flight time last 90 days : 150|
flight time total : 1300
flight time type : 30
|Function||flight crew : single pilot|
instruction : trainee
|Qualification||pilot : private|
|Anomaly||inflight encounter : vfr in imc|
non adherence : far
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : regained aircraft control|
flight crew : exited adverse environment
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
While flying with a private pilot working on a commercial certificate, during the en route phase of flight, I inadvertently entered IMC west/O a clearance. While climbing through a hole to reach clear conditions on top of a cloud deck, I suggested that we could take a straight heading and clear the clouds. The student disagreed and suggested I fly the aircraft, as the hole we were in appeared to be getting smaller. I took the controls and shortly thereafter entered IMC at approximately 10000' MSL. We remained in the cloud approximately 1 min before breaking out on top. Upon entering the cloud I suffered momentary vertigo and pitched up too steeply, causing the stall warning to come on twice. Once in the cloud I maintained heading because it seemed that the clouds were higher on either side. I believe the event occurred because of my poor judgement of the cloud heights and distances and of the performance capability of the aircraft. Although INS current, my vertigo was no doubt caused by surprise and lack of recent practice in actual IMC conditions.
Original NASA ASRS Text
Title: FLT INSTRUCTOR ATTEMPTS CLIMB THROUGH 'HOLE' IN CLOUDS, ENTERS IMC AND LOSES CTL OF THE ACFT.
Narrative: WHILE FLYING WITH A PVT PLT WORKING ON A COMMERCIAL CERTIFICATE, DURING THE ENRTE PHASE OF FLT, I INADVERTENTLY ENTERED IMC W/O A CLRNC. WHILE CLBING THROUGH A HOLE TO REACH CLR CONDITIONS ON TOP OF A CLOUD DECK, I SUGGESTED THAT WE COULD TAKE A STRAIGHT HDG AND CLR THE CLOUDS. THE STUDENT DISAGREED AND SUGGESTED I FLY THE ACFT, AS THE HOLE WE WERE IN APPEARED TO BE GETTING SMALLER. I TOOK THE CTLS AND SHORTLY THEREAFTER ENTERED IMC AT APPROX 10000' MSL. WE REMAINED IN THE CLOUD APPROX 1 MIN BEFORE BREAKING OUT ON TOP. UPON ENTERING THE CLOUD I SUFFERED MOMENTARY VERTIGO AND PITCHED UP TOO STEEPLY, CAUSING THE STALL WARNING TO COME ON TWICE. ONCE IN THE CLOUD I MAINTAINED HDG BECAUSE IT SEEMED THAT THE CLOUDS WERE HIGHER ON EITHER SIDE. I BELIEVE THE EVENT OCCURRED BECAUSE OF MY POOR JUDGEMENT OF THE CLOUD HEIGHTS AND DISTANCES AND OF THE PERFORMANCE CAPABILITY OF THE ACFT. ALTHOUGH INS CURRENT, MY VERTIGO WAS NO DOUBT CAUSED BY SURPRISE AND LACK OF RECENT PRACTICE IN ACTUAL IMC CONDITIONS.
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.