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A very low time CFI, on a practice ILS to boi in VFR conditions, allowed his student to penetrate a cloud for 4-6 seconds.
| Attributes | |
| ACN | 460851 |
| Time | |
| Date | 200001 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : boi.airport |
| State Reference | ID |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : boi.tower tower : cvg.tower |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : vfr |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 250 flight time type : 100 |
| ASRS Report | 460851 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Qualification | pilot : private |
| Events | |
| Anomaly | inflight encounter : vfr in imc non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On jan/xa/00, I was on a VFR clearance with an instrument student flying practice approachs on the ILS to runway 10R at boi airport. While on the final practice approach, I began a descent on GS after intercept. A cloud approximately 2-3 times larger than the aircraft appeared to be just above the GS path. I thought the current descent angle would bring us well below the cloud. Instead I entered the lower 1/3 of the cloud and went IFR for 4-6 seconds. I emerged from the cloud still on GS and 2 mi from the runway 10R threshold. I continued the approach and it was terminated to a full stop landing. The approach should have been terminated when it was clear I would not maintain VFR conditions.
Original NASA ASRS Text
Title: A VERY LOW TIME CFI, ON A PRACTICE ILS TO BOI IN VFR CONDITIONS, ALLOWED HIS STUDENT TO PENETRATE A CLOUD FOR 4-6 SECONDS.
Narrative: ON JAN/XA/00, I WAS ON A VFR CLRNC WITH AN INST STUDENT FLYING PRACTICE APCHS ON THE ILS TO RWY 10R AT BOI ARPT. WHILE ON THE FINAL PRACTICE APCH, I BEGAN A DSCNT ON GS AFTER INTERCEPT. A CLOUD APPROX 2-3 TIMES LARGER THAN THE ACFT APPEARED TO BE JUST ABOVE THE GS PATH. I THOUGHT THE CURRENT DSCNT ANGLE WOULD BRING US WELL BELOW THE CLOUD. INSTEAD I ENTERED THE LOWER 1/3 OF THE CLOUD AND WENT IFR FOR 4-6 SECONDS. I EMERGED FROM THE CLOUD STILL ON GS AND 2 MI FROM THE RWY 10R THRESHOLD. I CONTINUED THE APCH AND IT WAS TERMINATED TO A FULL STOP LNDG. THE APCH SHOULD HAVE BEEN TERMINATED WHEN IT WAS CLR I WOULD NOT MAINTAIN VFR 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.