# NTSB ATL89DLT02: Schweizer SGU-2-22E, N9847E, Benton, TN, October 15, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: October 15, 1988, 13:30 local (17:30 UTC)
- Place: Benton, TN
- Coordinates: 35.170303, -84.649459 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.1703&lon=-84.6495&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 4, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 7843
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL89DLT02
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7843/pdf
- Page: https://openairdocs.org/ntsb/ATL89DLT02

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, climb
  - flight control,aileron - disconnected (cause)
  - aircraft preflight - inadequate, dual student (cause)
  - supervision - improper, pilot in command(cfi) (cause)
- Loss of control - in flight, climb
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

AS THE STUDENT PILOT WAS ATTEMPTING A DUAL AERIAL TOW FLIGHT AT 100 FEET AGL, HE EXPERIENCED DIFFICULTY IN STAYING BEHIND THE TOW PLANE. THE INSTRUCTOR TOOK OVER THE CONTROLS AND WHILE APPLYING FULL RIGHT AILERON NOTED NO AILERON MOVEMENT. AT 300 FEET AGL THE STUDENT RELEASED THE GLIDER FROM THE TOW PLANE. THE INSTRUCTOR SUBSEQUENTLY STALLED THE AIRCRAFT WHILE ATTEMPTING TO LAND IN AN OPEN FIELD AND SETTLED INTO TREES. EXAMINATION OF THE AIRCRAFT DISCLOSED THAT THE PINS CONNECTING THE AILERONS AND PILOT CONTROLS WERE NOT INSTALLED. THEY WERE NOT LOCATED AT THE ACCIDENT SITE NOR IN THE STAGING AREA. THE INSTRUCTOR STATED THAT HE HAD FLOWN THIS AIRCRAFT 3 TIMES EARLIER THAT DAY.

## Aircraft

- Registration: [N9847E](https://openairdocs.org/deregistered/N9847E-1994-06-24), registration cancelled 1994-06-24, S/N 228 (OpenAirDocs)
- Reported make and model: SCHWEIZER SGU-2-22E
- Registry model: [Schweizer SGU 2-22E](https://openairdocs.org/model/schweizer-sgu-2-22e) (registry code 8050612) (OpenAirDocs)
- Category: Glider
- Serial number: 228
- Airframe hours: 919
- Engines: unknown
- Damage: Destroyed
- Flight: Instructional, Part 91
- Operator: Mike Reisman
- Registered owner: Wendy Lene
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 18, 1988, 86 hours before
- Departed: 92A, BENTON, TN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 65; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: rear; flight hours: 17,000 total, 26 in this make and model, 16,500 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point -0 °F

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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