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Atlas / TCDS / H1CE

FAA · Type Certificate Data Sheet

TCDS H1CE

The Enstrom Helicopter Corporation

Historical Aircraft Rotorcraft Rev 35 12/15/2015 drs.faa.gov ↗

Models covered (14)

Special Airworthiness Information Bulletins (3)

Advisory bulletins on these airframes. Not mandatory like ADs — but operators tracking AD compliance often miss the SAIB on the same component.

Special Conditions + ELOS findings

Certification-time deviations: SCs add requirements where the design is novel; ELOS allows alternative compliance. Most modern types have both.

  • ELOS AT09299CH-R-P-1 Equivalent Level of Safety (ELOS) Finding for Crash Resistance Fuel System Components

Certification basis — 14 CFR

Specific sections

  • Sec. 27.2
  • Sec. 21.25
  • Sec. 27.337
  • Sec. 27.351
  • Sec. 27.775
  • Sec. 3.4
  • Sec. 21.50
  • Sec. 27.29
  • Sec. 27.395
  • Sec. 27.401
  • Sec. 27.501
  • Sec. 27.613
  • Sec. 27.629
  • Sec. 27.663
  • Sec. 27.685
  • Sec. 27.727
  • Sec. 27.783
  • Sec. 27.861
  • Sec. 27.1541

Fleet view · 340 registered tails

Engineering specs aggregated from the FAA Aircraft Registry — what every actually-flying tail under this TCDS reports. Median + 10th–90th-percentile range across the active fleet.

Seats

3

3–5 (n=340)

Horsepower

205

180–420

Cruise (kts)

75

75–75

Year of mfr

1988

1966–2026

Engines on the type, by tail count

  • LYCOMING HIO-360 SER 92
  • LYCOMING HI0-360 SER 52
  • ROLLS-ROYC 250-C20W 45
  • LYCOMING HIO-360-F1AD 31
  • LYCOMING I0360 SER 28
  • ALLISON 250 SER 8
  • LYCOMING HIO-360-E1AD 5
  • LYCOMING I0-360-B1E 4

NTSB events

143

across all model variants

Applicable ADs

158

FAA airworthiness directives

Per-tail rate

0.42 events / tail · 0.46 ADs / tail

The TCDS PDF on drs.faa.gov is the authoritative document for design-as-certified weight limits, performance, equipment, AD compliance times, and operating limitations. Open on drs.faa.gov ↗ DRS frequently breaks — when it does, the fleet view above and the cross-links below are usually what you actually need.