# AD 64-24-02: Wing Attach Bolts

- Type: Airworthiness directive
- Status: Current
- Products: Textron 65, D50E and J50
- Effective: November 20, 1964
- Published: October 21, 1964
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 52 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8FCBCF6433C85AB186256A08007237B6.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/64-24-02

## The airworthiness directive

64-24-02 BEECH: Amdt. 823 Part 507 Federal Register October 21, 1964. Applies to Model D50E Aircraft, Serial Numbers DH-301 through DH-347, Model J50 Aircraft Serial Numbers JH-150 through JH-173, and Model 65 Aircraft, Serial Numbers LC-1 through LC-152.

Compliance required within the next 100 hours' time in service from the effective date of this AD, unless already accomplished in accordance with Beech Service Bulletins D-50E No. 37, J50 No. 9, and 65 No. 19.

It has been determined that some wing attaching bolts may have been overtorqued because of the use of lubricant during installation. The bolts must be dry and free of any dirt, lubricant, or other contaminant during installation to insure proper torquing. Accordingly, accomplish the following:

  (a) Remove the wing attach bolts one at a time and check for any trace of lubricant. If the bolts have been lubricated, discard the bolt and nut.

  (b) Remove any trace of lubricant by thoroughly washing all attaching parts (either new or original) and the spar fitting bearing surfaces in methyl ethyl keytone or lacquer thinner. Rinse in another bath of the clean solvent and blow dry prior to installation.

  (c) Reinstall bolts and nuts found to be free of lubricant and install new bolts and nuts where the parts have been discarded in accordance with paragraph (a). Torque each bolt in accordance with paragraph (d) before advancing to the next bolt to avoid disturbing the wing adjustment. (Note: It is not necessary to replace the soft aluminum washers between the spar fittings.)

  (d) Wing attach bolts, nuts, and the required torque valves are as follows:

Lower forward: NAS 495-14-29 bolt and EB 144 nut. Torque to 5000-5500 inch-pounds. Upper forward: NAS 150-38 bolt and 12B-108 nut. Torque to 2000-2300 inch- pounds. Upper and lower rear: NAS 150-33 bolts and 12B-108 nuts. Torque to 2000- 2300 inch-pounds.

(Beech Service Bulletins D50E No. 37, J50 No. 9, and 65 No. 19, as revised March 1964, cover this same subject.)

This directive effective November 20, 1964.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 5A4](https://openairdocs.org/tcds/5A4): Textron Aviation Inc.; names 2 of 14 models: J50, D50E
- [TCDS 3A20](https://openairdocs.org/tcds/3A20): Textron Aviation Inc.; names 1 of 22 models: 65

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 52 (52 by airframe model, 0 by engine model)
- Makers: Beech 51, Rockwell International 1

Models with the most aircraft:

- [Beech 65](https://openairdocs.org/model/beech-65): 22 aircraft (airframe model)
- [Beech D50E](https://openairdocs.org/model/beech-d50e): 18 aircraft (airframe model)
- [Beech 65 (LF-23F)](https://openairdocs.org/model/beech-65-lf-23f): 6 aircraft (airframe model)
- [Beech J50](https://openairdocs.org/model/beech-j50): 4 aircraft (airframe model)
- [Beech 65 (L23F)](https://openairdocs.org/model/beech-65-l23f): 1 aircraft (airframe model)
- [Rockwell International 65](https://openairdocs.org/model/rockwell-international-65): 1 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/64-24-02/models.md
Every aircraft: https://openairdocs.org/ad/64-24-02/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.