Instructor pilot takes student pilot into icing on an IFR practice cross country in an airplane not ...

Attributes
ACN	288221
Time
Date	199411
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : als
State Reference	CO
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	departure other enroute airway : zdv
Flight Plan	IFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : instrument pilot : atp
Experience	flight time last 90 days : 123 flight time total : 2887 flight time type : 111
ASRS Report	288221
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	inflight encounter : weather non adherence : far non adherence : clearance other spatial deviation
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : exited adverse environment
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

How the problem arose: my student and I were on an IFR training flight from alamosa, co, to taos, NM. While inbound to the ALS VOR from the alamosa airport we encountered IMC conditions at approximately 3800 ft AGL. Light to moderate turbulence and snow was encountered but no icing at this point. Outbound from the ALS VOR at 10 DME on V83 at 12000 ft MSL we began to experience light to moderate rime ice. At 15 DME the ice accumulation rate increased rapidly and changed to mixed rime and clear ice. I instructed my student to contact ZDV and report our icing conditions and this he did. Center requested we keep them informed and let center know if we needed a different altitude. Shortly thereafter I made the decision that continued flight in our present conditions was not safe and instructed my student to reverse course and to contact center to advise them of our change in course. As we approached the ALS VOR the ice accumulation rate decreased. My student was having a great deal of difficulty controling the airplane and I was frequency taking the airplane from him to correct altitude and/or heading. I heard him try to contact center several times but we received no reply from center. We could hear center working several airplanes. Looking back I am now unsure if my student was keying the microphone correctly. Eventually center did reply and we notified center of our course reversal, present position and altitude, and requested the VOR-DME-B approach to alamosa. At this time we are now directly over the ALS VOR at 12000 ft MSL. A couple min earlier center had released another aircraft IFR from alamosa to the ALS VOR. So now center had 2 aircraft at the ALS VOR both of us in IMC conditions and below radar coverage. Center was able to stop the other aircraft at 11000 ft MSL and no traffic conflict resulted. We completed the approach to the alamosa airport and landed without any problems.

Original NASA ASRS Text

Title: INSTRUCTOR PLT TAKES STUDENT PLT INTO ICING ON AN IFR PRACTICE XCOUNTRY IN AN AIRPLANE NOT CERTIFICATED FOR ICING HAS TO REVERSE COURSE WITHOUT ATC COORD.

Narrative: HOW THE PROB AROSE: MY STUDENT AND I WERE ON AN IFR TRAINING FLT FROM ALAMOSA, CO, TO TAOS, NM. WHILE INBOUND TO THE ALS VOR FROM THE ALAMOSA ARPT WE ENCOUNTERED IMC CONDITIONS AT APPROX 3800 FT AGL. LIGHT TO MODERATE TURB AND SNOW WAS ENCOUNTERED BUT NO ICING AT THIS POINT. OUTBOUND FROM THE ALS VOR AT 10 DME ON V83 AT 12000 FT MSL WE BEGAN TO EXPERIENCE LIGHT TO MODERATE RIME ICE. AT 15 DME THE ICE ACCUMULATION RATE INCREASED RAPIDLY AND CHANGED TO MIXED RIME AND CLR ICE. I INSTRUCTED MY STUDENT TO CONTACT ZDV AND RPT OUR ICING CONDITIONS AND THIS HE DID. CTR REQUESTED WE KEEP THEM INFORMED AND LET CTR KNOW IF WE NEEDED A DIFFERENT ALT. SHORTLY THEREAFTER I MADE THE DECISION THAT CONTINUED FLT IN OUR PRESENT CONDITIONS WAS NOT SAFE AND INSTRUCTED MY STUDENT TO REVERSE COURSE AND TO CONTACT CTR TO ADVISE THEM OF OUR CHANGE IN COURSE. AS WE APCHED THE ALS VOR THE ICE ACCUMULATION RATE DECREASED. MY STUDENT WAS HAVING A GREAT DEAL OF DIFFICULTY CTLING THE AIRPLANE AND I WAS FREQ TAKING THE AIRPLANE FROM HIM TO CORRECT ALT AND/OR HDG. I HEARD HIM TRY TO CONTACT CTR SEVERAL TIMES BUT WE RECEIVED NO REPLY FROM CTR. WE COULD HEAR CTR WORKING SEVERAL AIRPLANES. LOOKING BACK I AM NOW UNSURE IF MY STUDENT WAS KEYING THE MIKE CORRECTLY. EVENTUALLY CTR DID REPLY AND WE NOTIFIED CTR OF OUR COURSE REVERSAL, PRESENT POS AND ALT, AND REQUESTED THE VOR-DME-B APCH TO ALAMOSA. AT THIS TIME WE ARE NOW DIRECTLY OVER THE ALS VOR AT 12000 FT MSL. A COUPLE MIN EARLIER CTR HAD RELEASED ANOTHER ACFT IFR FROM ALAMOSA TO THE ALS VOR. SO NOW CTR HAD 2 ACFT AT THE ALS VOR BOTH OF US IN IMC CONDITIONS AND BELOW RADAR COVERAGE. CTR WAS ABLE TO STOP THE OTHER ACFT AT 11000 FT MSL AND NO TFC CONFLICT RESULTED. WE COMPLETED THE APCH TO THE ALAMOSA ARPT AND LANDED WITHOUT ANY PROBS.

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.

Instructor pilot takes student pilot into icing on an IFR practice cross country in an airplane not certificated for icing has to reverse course without ATC coordination.