# NTSB CHI88IA045: Aerospatiale ATR-42, N421MQ, Waterloo, IA, January 19, 1988

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: January 18, 1988, 18:15 local (Jan 19, 1988, 00:15 UTC)
- Place: Waterloo, IA
- Location: 42.4928° N, 92.3430° W: Placed by OpenAirDocs: center of Waterloo, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4928&lon=-92.3430&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report January 25, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 13984
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI88IA045
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13984/pdf
- Page: https://openairdocs.org/ntsb/CHI88IA045

## Sequence of events

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

- Fire, cruise - normal
  - fluid,fuel - leak (cause)
  - ignition system,ignition harness - improper (cause)

## Aircraft

- Registration: [N421MQ](https://openairdocs.org/deregistered/N421MQ-1998-06-11), registration cancelled 1998-06-11, S/N 014 (OpenAirDocs)
- Reported make and model: AEROSPATIALE ATR-42
- Registry model: [Aerospatiale/Aeritalia ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (registry code 8680920) (OpenAirDocs)
- Category: Airplane
- Serial number: 14
- Airframe hours: 3130
- Engines: P&W PW-120 1800 horsepower turbo prop
- Damage: Minor damage
- Fire: In-Flight
- Flight: Part 121
- Operator: Simmons Airlines
- Registered owner: Simmons Airlines
- Airworthiness certificate: Standard, Transport
- Departed: ALO
- Destination: CID, CEDAR RAPIDS, IA
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,086 total, 1,010 in this make and model, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 360° at 6 knots
- Visibility: 1 statute miles
- Lowest ceiling: 600 ft overcast
- Temperature: 34 °F
- Altimeter: 29.00 inHg

## Other investigations on N421MQ (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 CHI96IA125](https://openairdocs.org/ntsb/CHI96IA125), Apr 3, 1996: ATR 42 (N421MQ), Traverse City, MI, incident, minor damage. Probable cause: improper use of procedures by maintenance personnel at an overhaul facility during overhaul of the landing gear, allowing corrosion to occur on the barrel lugs of the landing gear, which subsequently…

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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