# NTSB MIA90IA109: Boeing 707-321B, Miami, FL, April 24, 1990

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: April 24, 1990, 06:34 local (11:34 UTC)
- Place: Miami, FL
- Coordinates: 25.729312, -80.360694 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=25.7293&lon=-80.3607&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32581
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90IA109
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32581/pdf
- Page: https://openairdocs.org/ntsb/MIA90IA109

## Probable cause

THE AIRPLANE'S AFT CG LIMIT HAD BEEN EXCEDED DUE TO IMPROPER WEIGHING PROCEDURES.

## Sequence of events

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

- Loss of control - on ground/water, takeoff
  - aircraft weight and balance - exceeded, company/operator management (cause)

## Analysis

THE CAPTAIN APPLIED TAKEOFF EPR AND IMMEDIATELY THE NOSE OF THE AIRCRAFT LIFTED OFF THE GROUND AND THE AIRCRAFT BEGAN A 90 DEGREE TURN TO THE LEFT OF THE RUNWAY CENTERLINE. THE COPILOT APPLIED FULL FORWARD YOKE AND ASSISTED THE CAPTAIN ON THE BRAKES AND FULL POWER LEVER AND FUEL REDUCTION, HOWEVER THE AIRCRAFT CONTINUED ITS ROLL FOR ABOUT 50 FEET WHEN FINALLY THE NOSE LOWERED ITSELF AND CAME TO REST IN THE DIRT. POST INVESTIGATION REVEALED THAT THE AFT CG LIMIT HAD BEEN EXCEEDED.

## Aircraft

- Registration: CCCYB (not matched to a registry record)
- Reported make and model: BOEING 707-321B
- Category: Airplane
- Serial number: 20022
- Airframe hours: 39843
- Engines: P&W JT3D-3B 18000 lbs thrust turbo jet
- Damage: Minor damage
- Flight: Part 129
- Operator: Operada En Arrend. Por Ladeco
- Registered owner: Comtron International Inc
- Airworthiness certificate: Standard, Transport
- Last inspection: 100 hour, March 12, 1990, 331 hours before
- Destination: JFK, NEW YORK CITY, NY
- Flight plan: IFR
- Airport: Miami International

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport, foreign, commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 10,277 total, 586 in this make and model, 70 in the last 30 days

## Weather

- Conditions: Visual (VMC), Dawn
- Wind: 10° at 6 knots
- Visibility: 6 statute miles
- Lowest ceiling: none
- Temperature: 68 °F, dew point 64 °F
- Altimeter: 30.00 inHg
- Observed at: MIA

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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