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A pilot and his instructor doing a simulated partial panel approach in a C172SP naviii became distracted by the advanced navigation and descended to 700 ft when the approach segment altitude was 1;600 ft. ATC alerted the pilots who then climbed back to the proper altitude.
| Attributes | |
| ACN | 916785 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Single Pilot Pilot Flying |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 30 Flight Crew Total 264 Flight Crew Type 254 |
| Person 2 | |
| Function | Instructor |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 410 Flight Crew Type 360 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
[I was] cleared for RNAV GPS 7R approach. On approach between IAF and FAF simulated partial panel approach. [I] zoomed in mfd to view course deviation due to pfd being dimmed to simulate failure. Lost situational awareness and descended to 700 ft when should have been at 1;600 ft. Warned by ATC and climbed back to altitude.
Original NASA ASRS Text
Title: A pilot and his instructor doing a simulated partial panel approach in a C172SP NAVIII became distracted by the advanced navigation and descended to 700 FT when the approach segment altitude was 1;600 FT. ATC alerted the pilots who then climbed back to the proper altitude.
Narrative: [I was] cleared for RNAV GPS 7R approach. On approach between IAF and FAF simulated partial panel approach. [I] zoomed in MFD to view course deviation due to PFD being dimmed to simulate failure. Lost situational awareness and descended to 700 FT when should have been at 1;600 FT. Warned by ATC and climbed back to altitude.
Data retrieved from NASA's ASRS site as of April 2012 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.