# NTSB MIA84FA095: Monnett Moni, N87RB, Indiantown, FL, February 26, 1984

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: February 26, 1984, 13:34 local (18:34 UTC)
- Place: Indiantown, FL
- Location: 27.0400° N, 80.4882° W: Placed by OpenAirDocs: center of Indiantown, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=27.0400&lon=-80.4882&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 30975
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84FA095
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30975/pdf
- Page: https://openairdocs.org/ntsb/MIA84FA095

## Sequence of events

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

- Airframe/component/system failure/malfunction, climb
  - wing - failure,total (contributing factor)
  - procedures/directives - improper, pilot in command (cause)
  - inadequate quality control, production/design personnel (cause)
  - misc eqpt/furnishings,seat belt - binding(mechanical) (contributing factor)
  - aerobatics - performed, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ACFT CRASHED IN PIECES AFTER THE AIRFRAME FAILED WHILE THE PLT WAS PERFORMING AEROBATICS. THE PLT USED HIS PARACHUTEWHILE STILL BELTED TO THE TAIL SECTION OF THE ACFT WHICH WAS LOWERED BY THE CHUTE. THE WRECKAGE CONSISTED OR SIX MAIN PIECES OF SEPARATED AIRFRAME. INVESTIGATION REVEALED THAT THE ACFT IS OF AN ALL METAL CONSTRUCTION AND INCROPORATES THE USE OF BONDING TO ATTACH THE ONE PIECE WING SKINS TO THE LEFT AND RIGHT WINGS. EXAMINATION OF THE BONDED SURFACES INDICATED THAT CONTAMINATION OF THE SURFACES DURING THE BONDING PROCESS RESULTED IN A WEAKER BOND BETWEEN THE BONDED SURFACE AND BONDING MATERIAL.

## Aircraft

- Registration: N87RB (not matched to a registry record)
- Reported make and model: MONNETT MONI
- Category: Airplane, amateur-built
- Serial number: 116
- Airframe hours: 47
- Engines: ITAL-AMERICAN KFM 107 25 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Robert K. Brumwell
- Last inspection: Annual, November 28, 1983, 47 hours before
- Departed: X58, INDIANTOWN, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: valid medical--no waivers/lim.; seat: front; flight hours: 3,754 total, 5 in this make and model, 3,754 as pilot in command, 6 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 8 knots, gusting 18
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: VRB, 25 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 19840226005289A](https://openairdocs.org/incident/19840226005289A), Feb 26, 1984: Amtr MONI, Indiantown, FL, Destroyed. Wing skins broke loose from spars in a snap roll. Parchute lowered tail section and pilot. Contaminated bonding.

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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