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Atlas / TCDS / 1H4

FAA · Type Certificate Data Sheet

TCDS 1H4

Sikorsky Aircraft Corporation

Historical Aircraft Rotorcraft Rev 32 12/29/1989 drs.faa.gov ↗

Models covered (3)

Former holders

  • Sikorsky Aircraft Corporation
  • Sikorsky Aircraft Corporation\California Helicopter Airways Inc.

Fleet view · 16 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

12

n=16

Horsepower

800

600–800

Cruise (kts)

71

71–85

Year of mfr

1955

1952–1996

Engines on the type, by tail count

  • AIRESEARCH TSE331 SERIES 4
  • WRIGHT C7BA SERIES 4
  • WRIGHT R-1300 SER 2
  • P&W R1340 SERIES 1
  • GARRETT TSE331-10UA 1
  • AIRESEARCH TPE331 SERIES 1
  • WRIGHT R-1300-3D 1

NTSB events

13

across all model variants

Applicable ADs

8

FAA airworthiness directives

Per-tail rate

0.81 events / tail · 0.50 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.