
Helicopter Sightseeing Tour Bookkeeping: Part 91 vs. Part 135, Insurance Costs, and the 2029 Fleet Deadline
How a sightseeing helicopter operator's books differ from other small businesses — Part 91.147 vs. Part 135 certificates drive $5–25M liability premiums, helicopters depreciate over 5 years under MACRS only if business use stays above 50%, weather cancellations complicate ASC 606 deferred revenue, and NYC's December 2029 Stage 3 noise ban turns non-compliant airframes into an asset-impairment problem today.










