# Accident 19960829029759A: Boeing 7373B7, Chattanooga, TN, August 29, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 29, 1996, 15:53 local time
- Place: Chattanooga, TN
- Damage: Minor damage
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: USAA
- Location: 35.0456° N, 85.3097° W: Placed by OpenAirDocs: center of Chattanooga, TN, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.0456&lon=-85.3097&mi=10
- Aircraft: N392US, a cancelled registration (https://openairdocs.org/deregistered/N392US-2006-04-10) (OpenAirDocs)
- Registry model: Boeing 737-3B7 (registry code 138447F, https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Registry engine: CFM International CFM56 series (registry code 13802, https://openairdocs.org/engine/cfm-international-cfm56-series) (OpenAirDocs)
- Reported make and model: BOEING 7373B7
- Reported engine: GE CFM56*
- People aboard: 84
- Fatal injuries: 0
- Pilot flight hours: 14,897 total, 5,210 in this make and model, 155 in the last 90 days
- NTSB investigation: [NTSB MIA96LA220](https://openairdocs.org/ntsb/MIA96LA220) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19960829029759A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.4)THE AIRPLANE ENCOUNTERED SEVERE TURBULENCE, WHILE IN CRUISE FLIGHT. THE SEAT BELT SIGNS WERE NOT ILLUMINATED. THE AIRPLANE WEATHER AVOIDANCE RADAR WAS ON, AND NO WEATHER WAS PRESENT ON THE RADAR SCREEN. WHEN THE CAPTAIN WAS NOTIFIED OF INJURIES SUSTAINED BY PASSENGERS, HE ACCESSED THE SITUATION, NOTIFIED ATC, AND REQUESTED TO DIVERT TO ANOTHER AIRPORT. THE AIRPLANE LANDED WITH OUT FURTHER INCIDENT. REVIEW OF THE DIGITAL FLIGHT DATA RECORDER REVEALED THE AIRPLANE WAS SUBJECTED TO SEVERE ACCELERATION OSCILLATIONS. THE VERTICAL ACCELERATION PEAKED AT 1.81 G'S, -1.38 G'S, 1.99 G'S, AND CONTINUED TO OSCILLATE FOR 28 SECONDS. REVIEW OF WEATHER DATA REVEALED NO AREA OF SIGNIFICANT CONVECTION IN THE AREA.

## The NTSB's investigation of this event (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 MIA96LA220](https://openairdocs.org/ntsb/MIA96LA220), Aug 29, 1996: Boeing 737-300 (N392US), Chattanooga, TN, minor damage. Probable cause: clear air turbulence, which was encountered during cruise flight and resulted in injuries to passengers.

## Other reports on N392US (1)

Matched to the same aircraft by N-number and date.

- [Incident 19950626022909I](https://openairdocs.org/incident/19950626022909I), Jun 26, 1995: Boeing 7373B7 (N392US), Washington, DC. Uncommonded right roll on approach. Turned 45 degrees. Used auto pilot kill switch and recovered control.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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