# NTSB Accident SEA89LA127
> **PIPER PA-28-180** · 1989-06-30 · SNOQUALMIE PASS, WA, USA · SERS
## Event
- **NTSB number:** SEA89LA127
- **Event ID:** 20001213X28689
- **Type:** Accident
- **Date:** 1989-06-30
- **Location:** SNOQUALMIE PASS, WA, USA
- **Coordinates:** 47.419311, -121.369445
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 3
## Aircraft
- **Make:** PIPER
- **Model:** PA-28-180
- **Registration:** N56759
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

IMPROPER IN-FLIGHT PLANNING/DESCISION BY THE PILOT, WHICH RESULTED IN THE AIRCRAFT ENTERING A BOX CANYON WITH INSUFFICIENT SPEED AND ALTITUDE TO MANEUVER OUT OF THE CONFINED AREA. FACTORS RELATED TO THE ACCIDENT WERE:  THE PILOT'S CONTINUED FLIGHT INTO KNOWN ADVERSE WEATHER CONDITIONS AND THE TERRAIN AND WEATHER CONDITIONS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA89LA127) · AI Analytics · CC0 1.0*