Installation of Carnadian Marconi vertical scale engine instruments.

Installation of emergency power and lighting system.

Installation of APU modifications.

Installation of engine cowl APU interlock.

Installation of Litton LCD engine instruments to replace original electro- mechanical production engine instruments.

Installation of Marconi vertical scale engine instruments.

Installation of a Solar Gas Turbine Model APU. Limited to installation on serial number 135 ONLY.

Replacement of Garrett AiResearch GTCP-36-6 APU with Solar T-62T-40C2 APU.

Replacement of Garrett GTCP 36-6 auxiliary power unit by Garrett GTCP 36-100G auxiliary power unit.

Installation of a No. 1 emergency power supply system.