# NTSB Incident IAD96IA098
> **Boeing 747-136** · 1996-06-18 · JAMAICA, NY, USA · NONE
## Event
- **NTSB number:** IAD96IA098
- **Event ID:** 20001208X06004
- **Type:** Incident
- **Date:** 1996-06-18
- **Location:** JAMAICA, NY, USA
- **Coordinates:** 40.649791, -73.79058
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 414
- **Total aboard:** 414
## Aircraft
- **Make:** Boeing
- **Model:** 747-136
- **Registration:** N606FF
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** MINR
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

failure of the constant speed drive (CSD) to disconnect from the generator.  Contributing to the cause was the failure of the FAA approved overhaul facility to follow the manufacturer's overhaul manual.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=IAD96IA098) · AI Analytics · CC0 1.0*