# NTSB MKC88DCA01: Rosenmayer Skyranger S/C, N830CR, Maryland Hgts, MO, August 7, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: August 7, 1988, 08:20 local (13:20 UTC)
- Place: Maryland Hgts, MO
- Coordinates: 38.719558, -90.470375 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7196&lon=-90.4704&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report July 10, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 34451
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC88DCA01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34451/pdf
- Page: https://openairdocs.org/ntsb/MKC88DCA01

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - wing,bracing strut - fatigue (cause)
  - acft/equip,inadequate aircraft component, production/design personnel (cause)
  - wing,bracing strut - failure,total (cause)
  - maintenance,inspection - inadequate, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
  - object - tree(s)

## Analysis

WITNESSES OBSERVED THE A/C MAKING A TURN WHEN THE WINGS CAME OFF AND THE A/C NOSE-DIVED TO THE GROUND WITH THE WINGS 'FLOATING' DOWN AFTER THE A/C.  EXAMINATION OF THE WRECKAGE FOUND A FATIGUE CRACK 1/3 THE CIRCUMFERENCE WITH INSTANTANEOUS CRACKING ON THE REMAINDER CIRCUMFERENCE OF THE RIGHT WING LIFT STRUT.

## Aircraft

- Registration: [N830CR](https://openairdocs.org/deregistered/N830CR-2011-04-26), registration cancelled 2011-04-26, S/N 83012SC, built 1988 (OpenAirDocs)
- Reported make and model: ROSENMAYER SKYRANGER S/C (SKYRANGER)
- Registry model: [Rosenmayer Charles E STRIPLIN SKYRANGER S](https://openairdocs.org/model/rosenmayer-charles-e-striplin-skyranger-s) (registry code 0565755) (OpenAirDocs)
- Registry engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 83012SC
- Airframe hours: 4
- Engines: VOLKSWAGEN HAPI 60 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Charles Edward Rosenmayer
- Airworthiness certificate: Special, Experimental (Special)

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 1,361 total, 4 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 3 knots
- Visibility: 70 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 70 °F
- Altimeter: 30.00 inHg
- Observed at: SUS, 5 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 19880807030639A](https://openairdocs.org/incident/19880807030639A), Aug 7, 1988: Amtr SKYRANGER, Maryland Height, MO, Destroyed, 1 fatal. Wing lift strut tore loose from wing while maneuvering on second test flight. Aircraft disintregrated and crashed.

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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