ASN logo
Accident description
Last updated: 17 October 2017
Status:Final
Date:Tuesday 13 January 1998
Time:08:10
Type:Silhouette image of generic LJ25 model; specific model in this crash may look slightly different
Learjet 25B
Operator:American Corporate Aviation
Registration: N627WS
C/n / msn: 25-170
First flight: 1974
Total airframe hrs:8943
Engines: 2 General Electric CJ610-6
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 2 / Occupants: 2
Airplane damage: Damaged beyond repair
Location:3,2 km (2 mls) E of Houston-George Bush Intercontinental Airport, TX (IAH) (   United States of America)
Phase: Approach (APR)
Nature:Ferry/positioning
Departure airport:Houston-William P. Hobby Airport, TX (HOU/KHOU), United States of America
Destination airport:Houston-George Bush Intercontinental Airport, TX (IAH/KIAH), United States of America
Narrative:
Descended below the glideslope during the second runway 26 approach, struck trees and crashed. The first officer's instruments were displaying a false full fly-down glideslope indication because of a failed amplifier in the navigation receiver.

Probable Cause:

PROBABLE CAUSE: "The flight crew's continued descent of the airplane below the glideslope and through the published decision height without visual contact with the runway environment. Also, when the captain encountered difficulty tracking the localizer course, his improper decision to continue the approach by transferring control to the first officer instead of executing a missed approach contributed to the cause. In addition, the following were factors to the accident: (1) American Corporate Aviation's failure to provide an airworthy airplane to the flight crew following maintenance, resulting in a false glideslope indication to the first officer; (2) the flight crew's failure to follow company crew coordination procedures, which called for approach briefings and altitude callouts; and (3) the lack of an FAA requirement for a ground proximity warning system on the airplane. "

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Accident number: FTW98MA096
Download report: Summary report

Classification:

Controlled Flight Into Terrain (CFIT) - Ground

Sources:
» NTSB


Follow-up / safety actions

NTSB issued 2 Safety Recommendations

Show all AD's and Safety Recommendations

Photos

Add your photo of this accident or aircraft

Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Houston-William P. Hobby Airport, TX to Houston-George Bush Intercontinental Airport, TX as the crow flies is 38 km (24 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Networks opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
languages: languages

Share