- Effective
- June 5, 1974
- Models
- 36, 58, 58A, 60, A36, A60
- Registered aircraft
- 3,456 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1857
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 January 21, 2026.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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| FAA DRS HTML | 20 KB | 682bf192…a3aaa52 | FAA DRS (API key needed) |
On this page
The airworthiness directive
74-12-02 BEECH: Amendment 39-1857. Applies to Models 36 and A36 (Serial Numbers E-1 through E-434); Models 58 and 58A (Serial Numbers TH-1 through TH-335); Models 60 and A60 (Serial Numbers P-4 through P-240) aircraft.
Compliance: Required as indicated, unless already accomplished.
To provide the required structural level of occupant protection during minor crash conditions for those aircraft equipped with optional, aft-facing seats, within the next 100 hours' time in service after the effective date of this AD, accomplish the following:
Install two improved seat back supports on each aft-facing seat in accordance with Beechcraft Service Instruction No. 0591-314, Rev. 1, or later approved revisions or any equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
NOTE: Seat back supports, Beech P/N 58-530193-1 are applicable to Models 36, A36, 58, 58A, and 60 aircraft, and seat back supports, Beech P/N 58-530193-3 are applicable to Model A60 aircraft.
This amendment becomes effective June 5, 1974.
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 3,456
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1968 | 84 |
|---|---|
| 1969 | 46 |
| 1970 | 61 |
| 1971 | 43 |
| 1972 | 87 |
| 1973 | 121 |
| 1974 | 108 |
| 1975 | 144 |
| 1976 | 129 |
| 1977 | 192 |
| 1978 | 192 |
| 1979 | 168 |
| 1980 | 142 |
| 1981 | 144 |
| 1982 | 81 |
| 1983 | 61 |
| 1984 | 85 |
| 1985 | 76 |
| 1986 | 39 |
| 1987 | 46 |
| 1988 | 55 |
| 1989 | 40 |
| 1990 | 66 |
| 1991 | 73 |
| 1992 | 44 |
| 1993 | 60 |
| 1994 | 84 |
| 1995 | 60 |
| 1996 | 52 |
| 1997 | 85 |
| 1998 | 74 |
| 1999 | 78 |
| 2000 | 76 |
| 2001 | 69 |
| 2002 | 35 |
| 2003 | 9 |
| 2004 | 23 |
| 2005 | 9 |
| 2007 | 1 |
414 with no year recorded