Summary
The FAA proposes to adopt a new airworthiness directive (AD) for Honeywell International Inc. LTS101 series turboshaft and LTP101 series turboprop engines with certain gas generator turbine discs installed. This proposed AD would require reducing the life limits for certain gas generator turbine discs. This proposed AD results from an error in a change to the engineering drawing for the gas generator turbine disc from which they manufactured 260 discs. We are proposing this AD to prevent rupture of the gas generator turbine disc, which could result in uncontained engine failure and damage to the aircraft.