# NTSB MIA88IA231: Boeing 737-222, N69AF, Miami, FL, July 24, 1988

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: July 24, 1988, 09:15 local (13:15 UTC)
- Place: Miami, FL
- Location: 25.7954° N, 80.2901° W: Placed by OpenAirDocs at MIAMI INTL (MIA), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7954&lon=-80.2901&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 85 uninjured
- Status: Completed, report January 25, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 32068
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA88IA231
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32068/pdf
- Page: https://openairdocs.org/ntsb/MIA88IA231

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - combustion assembly,outer casing - cracked (cause)
  - maintenance,overhaul,major - improper, company maintenance personnel (cause)
  - combustion assembly,outer casing - ruptured (cause)

## Analysis

FLT EXPERIENCED FAILURE OF THE NUMBER TWO ENGINE SHORTLY AFTER TAKEOFF WHEN THE COMBUSTION OUTER CASE RUPTURED. METALLURGICAL EXAMINATION REVEALED THE RUPTURED CASE HAD A 1/2 INCH CRACK IN IT WHEN IT WENT THROUGH OVERHAUL 16 CYCLES BEFORE THE FAILURE. IT WAS FURTHER DETERMINED THAT THE NICKLE AND CADMIUM PLATING PLACED ON THE CASE AT OVERHAUL WAS NOT PROPER THICKNESS RESULTING IN CADMIUM EMBRITTLEMENT OF THE CASE BASE MATERIAL AND THEN THE CASE RUPTURE.

## Aircraft

- Registration: [N69AF](https://openairdocs.org/deregistered/N69AF-1992-12-21), registration cancelled 1992-12-21, S/N 19059 (OpenAirDocs)
- Reported make and model: BOEING 737-222
- Registry model: [Boeing 737-222](https://openairdocs.org/model/boeing-737-222) (registry code 1384473) (OpenAirDocs)
- Category: Airplane
- Serial number: 19059
- Engines: P&W JT8D-15A 15500 lbs thrust turbo fan
- Damage: Minor damage
- Flight: Part 121
- Operator: Pan American World Airways, doing business as Pan Am
- Registered owner: Heleasco Fifteen Inc.
- Airworthiness certificate: Standard, Transport
- Last inspection: AAIP, July 20, 1988, 16 hours before
- Destination: DFW, DALLAS, TX
- Flight plan: IFR
- Airport: MIA, Miami International, runway 27L, 13,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; airline transport, flight engineer; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 10,300 total, 70 in this make and model, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 77 °F
- Altimeter: 30.00 inHg
- Observed at: MIA, 1 nm away

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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