FAA · Type Certificate Data Sheet

TCDS H3WE

MD Helicopter Inc.

Historical Aircraft Rotorcraft Rev 23 12/20/2011 drs.faa.gov ↗

Models covered (14)

Special Airworthiness Information Bulletins (1)

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

SW-07-17 Lateral mixer output link assembly (mixer link), part number 600N7636

Certification basis — 14 CFR

Specific sections

Sec. 21.16
Sec. 21.21
Sec. 21.50

Former holders

Schweizer\Hughes\McDonnell Douglas Helicopter System\MD Helicopter Inc.
Schweizer\Hughes\McDonnell Douglas Helicopter System

Comments

(MDHI)

Fleet view · 713 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

2–4 (n=713)

Horsepower

420

317–650

Cruise (kts)

112

112–112

Year of mfr

1982

1966–2026

Engines on the type, by tail count

ALLISON 250-C20 SER 139
ROLLS-ROYC 250-C20B 89
ROLLS-ROYC 250-C30 71
ALLISON 250 SER 250HP 50
ALLISON 250-C20B 49
ALLISON 250 SER 400HP 35
ROLLS-ROYC 250-C20R/2 24
ALLISON 250-C20 16

NTSB events

207

across all model variants

Applicable ADs

261

FAA airworthiness directives

Per-tail rate

0.29 events / tail · 0.37 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.