# NTSB MIA83LA157: Burkhart Grob G102, N155SS, Chuluota, FL, June 12, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 12, 1983, 14:25 local (18:25 UTC)
- Place: Chuluota, FL
- Coordinates: 28.640869, -81.069267 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=28.6409&lon=-81.0693&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 30897
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA83LA157
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30897/pdf
- Page: https://openairdocs.org/ntsb/MIA83LA157

## Sequence of events

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

- In flight encounter with weather, approach - vfr pattern - final approach
  - in-flight planning/decision - improper, pilot in command (cause)
  - weather condition - thunderstorm (contributing factor)
  - weather condition - turbulence (contributing factor)
  - weather condition - downdraft (contributing factor)
- Undershoot, approach - vfr pattern - final approach
- In flight collision with object, approach - vfr pattern - final approach
  - object - tree(s) (contributing factor)

## Analysis

THE PLT REPORTED THAT AFTER HE WAS AIRBORNE FOR 40 MIN, HE WAS FORCED TO TERMINATE THE FLT DUE TO THE APCH OF A SEVERE RAIN SHOWER. HE STATED THAT WHEN THE ACFT WAS ON A FINAL APCH TO RWY 11, A SINK RATE DEVELOPED THAT HE COULD NOT ARREST. SUBSEQUENTLY, THE ACFT STRUCK TREES APRX 100 FT SHORT OF THE RWY. THE PLT STATED THAT RAIN STARTED FALLING AS HE EXITED THE ACFT. HE ATTRIBUTED THE SINK TO TURBULENCE FROM THE APPROACHING THUNDERSTORM.

## Aircraft

- Registration: [N155SS](https://openairdocs.org/aircraft/N155SS), registered now, S/N 1722, built 1978 (OpenAirDocs)
- Reported make and model: Burkhart Grob G102
- Registry model: [Burkhart Grob Flugzeugbau G102 ASTIR CS](https://openairdocs.org/model/burkhart-grob-flugzeugbau-g102-astir-cs) (registry code 1660104) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 1722
- Airframe hours: 520
- Engines: unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kjenslie Knut
- Registered owner: Harvey L. Bryning
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 14, 1983, 33 hours before
- Airport: X45, Flying Seminole, runway 11, 4,000 × 160 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; private; airplane ratings: single-engine land; medical: unknown; seat: front; flight hours: 71 total, 9 in this make and model, 59 as pilot in command, 13 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 4 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft broken
- Altimeter: 29.00 inHg
- Observed at: ORL, 12 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19830612026169A](https://openairdocs.org/incident/19830612026169A), Jun 12, 1983: Grob G102ASTIR, Chuluota, FL, Substantial damage. Encountered downdraft from approaching thunderstorm on final. Crash landed in trees 100 ft short of runway.

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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