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Grob glider instructor reported taking off without the total energy probe installed; so they were without all flight instruments.
| Attributes | |
| ACN | 1308730 |
| Time | |
| Date | 201511 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Sail Plane |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Takeoff |
| Flight Plan | None |
| Person 1 | |
| Function | Instructor Pilot Not Flying |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 13 Flight Crew Total 299 Flight Crew Type 104 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural Published Material / Policy |
Narrative:
Glider used for training flight had been disassembled for polishing and waxing. After assembly; student pilot and instructor rushed preflight inspection to fly ship before sunset and took off without total energy probe installed. Without te (total energy) probe; no instruments (airspeed/altimeter/vertical speed) were operable. Missing probe was not corrected by assembly crew; pilots; instructor who signed off assembly check; or club safety manager at the flight line. Pilots noticed inoperable instruments in flight and landed safely without reference to instruments. Inadequate preflight inspection especially failure to follow written checklist is the most obvious cause. External pressure to fly also was a factor. The club instructing should also teach better adm (aeronautical decision making) for the go/no-go decision using the pave and imsafe checklists.
Original NASA ASRS Text
Title: Grob glider instructor reported taking off without the total energy probe installed; so they were without all flight instruments.
Narrative: Glider used for training flight had been disassembled for polishing and waxing. After assembly; student pilot and instructor rushed preflight inspection to fly ship before sunset and took off without total energy probe installed. Without TE (Total Energy) probe; no instruments (airspeed/altimeter/vertical speed) were operable. Missing probe was not corrected by assembly crew; pilots; instructor who signed off assembly check; or club safety manager at the flight line. Pilots noticed inoperable instruments in flight and landed safely without reference to instruments. Inadequate preflight inspection especially failure to follow written checklist is the most obvious cause. External pressure to fly also was a factor. The club instructing should also teach better ADM (Aeronautical Decision Making) for the go/no-go decision using the PAVE and IMSAFE checklists.
Data retrieved from NASA's ASRS site 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.