In Partnership With

October 3, 1977

Safety

Ntsb Analyzes Factors in 727 Crash

Avionics

Doppler/scanning Beam Tests Pushed

Space Technology

Unusual Trajectories Set for Sun-earth Explorers

5859

Safety

Ntsb Analyzes Factors in 727 Crash

Examination of Engine Thrust Reversers’ Indicator Light Bulbs. The safety board examined the light bulbs from the Nos. 1, 2, and 3 thrust reversers at its laboratory in Washington, D. C. The examination revealed that the filament coils in the No. 1 thrust reverser indicator bulb were stretched and distorted; that the filament coils in the No. 2 thrust reverser indicator bulb were slightly stretched; and that the filament coils in the No. 3 thrust reverser indicator bulb were stretched and distorted.
5253

Avionics

Doppler/scanning Beam Tests Pushed

London—British government will make a major effort to force competitive hardware tests of Doppler and time reference scanning beam microwave landing systems in time for the results to be presented to the International Civil Aviation Organization (ICAO) when it meets in Montreal next April to decide on a new world-standard microwave landing system.

3839

Space Technology

Unusual Trajectories Set for Sun-earth Explorers

Greenbelt, Md.—Triple spacecraft International Sun-Earth Explorer (ISEE) mission will utilize the most unusual orbital trajectories ever attempted to obtain detailed earth magnetospheric and solar data applicable to terrestrial, planetary and interplanetary research.

4849

Aeronautical Engineering

Vertol Extending Chinook Service Life

New York—Army’s Boeing Vertol CH-47D modernization program will permit retention of the revamped medium-lift helicopters in the inventory at least until the turn of the century. As well as extending the type’s life, the modifications also are intended to increase operational capability and reduce the cost of ownership.

2425

Space Technology

Orbiter Nears Final Free Flight Tests

Edwards AFB, Calif.—Streamlined tail cone has been removed from the space shuttle orbiter Enterprise and three dummy rocket engines are being installed in preparation for a final series of critical free flight tests aimed at verifying the vehicle’s handling characteristics in its operational high-drag configuration.

1617

Special Report: Business Flying Continues Growth

Nbaa Focuses on New Models

Growing market for turbine-powered aircraft evident at annual meeting; companies continue to add to backlogs

2829

Air Transport

Laker Seeks to Allay Early Concerns

Passenger worries over long lines, waits are obstacles carrier must overcome during initial operations of Skytrain

1819

Special Report: Business Flying Continues Growth

Piper Moves to Bolster Turboprop Market Stance

Houston—Confidence in the continued growth of business turboprop aircraft sales has prompted Piper Aircraft to expand its turboprop Cheyenne line from one model to three. Piper’s efforts to strengthen its business aircraft market position were strongly evident at the National Business Aircraft Assn. annual meeting here last week.

2223

Management

Europe Seen Weighing F-16 Import Duty Snag

2627

Space Technology

Delay in Shuttle Engine Activities Being Studied

September 261977 October 101977