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Type Record · As of May 3, 2026

HILLER OH-23B

Rotorcraft · FRANKLIN 6V-335 SERIES

Registered

6

Year Range

1951–1955

NTSB Events

5

Airworthiness Directives

0

Aircraft Resources

Engine · Franklin Engine Corp (PZL-Aero) → Search FAA TCDS →

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered HILLER OH-23B aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

By State (top 10)

  • OH 16.7% 1
  • NV 16.7% 1
  • AL 16.7% 1
  • TX 16.7% 1
  • NJ 16.7% 1
  • TN 16.7% 1

By Decade of Manufacture

  • 1950s 66.7% 4
  • Unknown 33.3% 2

02 /  NTSB Records

Events involving HILLER OH-23B aircraft

5 event(s) on file. Showing the most recent 5.

03 /  Airworthiness Directives

FAA directives applicable to HILLER OH-23B

No matching airworthiness directives are on file for this make and model in the Federal Register.

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for HILLER OH-23B

Advisory Circulars

ACs whose subject explicitly mentions HILLER or OH-23B.

05 /  Aircraft of this type

All 6 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

6 of 6
N-number St Year NTSB FAA
N17129 OH 1951 ● Look up ↗
N57893 NV 1955 · Look up ↗
N6055 AL — ● Look up ↗
N6057 TX 1954 ● Look up ↗
N67699 NJ 1951 ● Look up ↗
N68364 TN — · Look up ↗

Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)

05 /  Sources & Methodology

Every count traces back to a primary US-government source

We render counts and lists as the agency publishes them. Read the methodology →