Type Record · As of May 3, 2026
DOUGLAS AD-4N
Fixed Wing Single Engine
Registered
3
Year Range
1952–1952
NTSB Events
0
Airworthiness Directives
0
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered DOUGLAS AD-4N aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- CA 33.3% 1
- AL 33.3% 1
- IA 33.3% 1
By Decade of Manufacture
- 1950s 33.3% 1
- Unknown 66.7% 2
02 / NTSB Records
Events involving DOUGLAS AD-4N aircraft
No NTSB-recorded events match DOUGLAS AD-4N in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to DOUGLAS AD-4N
No matching airworthiness directives are on file for this make and model in the Federal Register.
04 / Type Certificate Data Sheets
FAA TCDS for DOUGLAS AD-4N
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- A1GL Historical Rev 0 · 02/01/1978
Kal-Aero Inc.
Models: AD-4N
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for DOUGLAS AD-4N
Advisory Circulars
ACs whose subject explicitly mentions DOUGLAS or AD-4N.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 3 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.
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →