# NTSB MIA90LA155: Boeing 727-223, N6834, Fort Myers, FL, July 18, 1990

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 18, 1990, 16:48 local (20:48 UTC)
- Place: Fort Myers, FL
- Coordinates: 26.560428, -81.869895 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.5604&lon=-81.8699&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor, 150 uninjured
- Status: Completed, report September 28, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32682
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA155
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32682/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA155

## Probable cause

UNFORECASTED ENCOUNTER WITH WEATHER. THE AIRPLANE ENCOUNTERED SEVERE TURBLENCE DURING ENROUTE DESCENT, RESULTING IN ONE FLIGHT ATTENDANT SUSTAINING SERIOUS INJURY, AND ONE PASSENGER SUSTAINING MINOR INJURY.

## Sequence of events

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

- In flight encounter with weather, descent - normal
  - weather condition - turbulence (cause)

## Analysis

AN AMERICAN AIRLINES, BOEING 727-223, WAS IFR AT FLIGHT LEVEL 30,200. THE AIRPLANE WAS 15 NAUTICAL MILES, NORTHWEST OF FORT MYERS, FLORIDA, IN A DESCENT TO MIAMI INTERNATIONAL AIRPORT, MIAMI, FLORIDA, WHEN IT EXPERIENCED AN UNFORECASTED ENCOUNTER WITH WEATHER (SEVER TURBLENCE). THE AIRPLANE WAS NOT DAMAGED. ONE FLIGHT ATTENDANT SUSTAINED SERIOUS INJURY, AND ONE PASSENGER SUSTAINED MINOR INJURIES. THE AIRPLANE ARRIVED AT DESTINATION AIRPORT WITHOUT FIRTHER INCIDENT. ANALYSIS OF THE FLIGHT DATA RECORDER REVEALED THE AIRPLANE WAS SUBJECTED TO A SERIES OF OSCILLATING VERTICAL ('G') LOADS FOR A PERIOD OF 50 SECONDS. THE MAXIMUM G LOAD WAS 1.94, AND THE MINIMUM WAS -0.55.

## Aircraft

- Registration: [N6834](https://openairdocs.org/deregistered/N6834-2004-01-27), registration cancelled 2004-01-27, S/N 20187, built 1969 (OpenAirDocs)
- Reported make and model: BOEING 727-223
- Registry model: [Boeing 727-223](https://openairdocs.org/model/boeing-727-223) (registry code 1384074) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT8D-9 series](https://openairdocs.org/engine/pratt-whitney-jt8d-9-series) (registry code 52048, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Airframe hours: 59063
- Engines: P&W JT8D-9 16000 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Operator: American Airlines, Inc.
- Registered owner: American Airlines Inc
- Airworthiness certificate: Standard, Transport
- Departed: DFW, DALLAS, TX
- Destination: MIA, MIAMI, FL
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,500 total, 573 in this make and model, 93 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Visibility: 7 statute miles
- Temperature: 75 °F, dew point 73 °F
- Altimeter: 30.00 inHg
- Observed at: FMY, 115 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 19900718032869A](https://openairdocs.org/incident/19900718032869A), Jul 18, 1990: Boeing 727223, Fort Myers, FL. Entered severe unforecast turbulence on descent through clouds. Flight attendent and passenger injured.

## Other investigations on N6834 (1)

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.

- [NTSB IAD77DA028](https://openairdocs.org/ntsb/IAD77DA028), Mar 4, 1977: Boeing 727 (N6834), Dayton, OH, no damage

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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