61-13-03: Fuselage Modification
FAA order 61-13-03 is an airworthiness directive in force since June 24, 1961. The FAA's subject line: Fuselage Modification. It names Schleicher Alexander K 7: about 15 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: airframe structure.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Alexander Schleicher GmbH & Co.
- Models
- K7
- On this site
- Schleicher Alexander K 7 15 registered
Dates and paperwork
- In force since
- June 24, 1961
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (988 characters)
61-13-03 SCHLEICHER: Amdt. 299 Part 507 Federal Register June 24, 1961. Applies to Model K7 Gliders With Serial Numbers Up To and Including 935 and Serial Number 984.
Compliance required prior to next flight unless already accomplished.
To preclude the buckling of fuselage steel tube members on each side at the rear of the fuselage, replacement of five tubes with tubes having greater wall thickness is required. Replace the existing steel tube diagonal members, counting forward from the tail post as follows, using Civil Aeronautics Manual 18 repair procedures or manufacturer's recommendation.
(a) Right side only, third member: Replace with 12 MMS. (15/32"), outside diameter, 1MM. (.040") wall thickness tubes.
(b) Right and left side, fourth and sixth members: Replace with 14 MMS. (9/16") outside diameter, 1 MM. (.040") wall thickness tubes.
(Schleicher Drawing No. L-211.10-A4 dated March 15, 1961, covers this subject.)
This directive effective June 24, 1961.
Related safety bulletins advice on the same designs, not orders
1997-11-24ACE-98-10 ·
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/61-13-03.json · aircraft systems.