- Models
- DHC-2 Mk.I, DHC-2 Mk.II, DHC-2 Mk.III
- Data sheet
- TCDSA-806
- Registered aircraft
- 140 matched by model
- Product
- Aircraft · Small airplane
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | b916dbe6…4f9f03c | FAA DRS (API key needed) |
On this page
The airworthiness directive
53-11-02 de HAVILLAND: Applies to Model DHC-2 (Beaver) Aircraft, Serial Numbers 1 to 445 Inclusive.
Compliance required as indicated.
Cases have been reported of chafing of the engine oil sump by section assemblies. (P/N C2-E-105ND) and (P/N C2-E-107ND) of accessory firewall. An enlarged flange clearance is required to be incorporated as soon as possible but not later than the next 100 hours.
The FAA concurs in this mandatory action by the Canadian Department of Transport.
(de Havilland Technical News Sheet, Series B, No. 64 dated March 23, 1953, available from de Havilland Aircraft of Canada, Ltd., Toronto, Ontario, Canada, covers this same subject and describes method of repair.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 140
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1949 | 2 |
|---|---|
| 1951 | 4 |
| 1952 | 9 |
| 1953 | 8 |
| 1954 | 13 |
| 1955 | 9 |
| 1956 | 7 |
| 1957 | 19 |
| 1958 | 7 |
| 1959 | 9 |
| 1960 | 2 |
| 1961 | 2 |
| 1962 | 1 |
| 1963 | 1 |
| 1964 | 5 |
| 1965 | 3 |
| 1966 | 7 |
| 1967 | 3 |
| 1968 | 3 |
26 with no year recorded