# AD 86-06-02: Torque

- Type: Airworthiness directive
- Status: Historical
- Products: Hartzell Propeller HC-B5MP-3 with STC SA2369SW
- Effective: March 28, 1986
- Superseded by: [AD 2004-21-01](https://openairdocs.org/ad/2004-21-01)
- Product type: Propeller
- Amendment: 39-5259
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C64EC49EB817E14F8625697400634E99.0001
- DRS record last changed: August 7, 2025
- Page: https://openairdocs.org/ad/86-06-02

## The airworthiness directive

86-06-02 HARTZELL PROPELLER PRODUCTS DIVISION: Amendment 39-5259. Applies to Hartzell Propeller Products Division Model HC-B5MP-3 five bladed propellers installed on Aerospatiale (Nord) Model 262A modified by STC SA2369SW and Short Brothers Ltd. Model SD3-30 aircraft.

Compliance is required as indicated, unless already accomplished.

To prevent propeller separation from aircraft, accomplish the following:

  (a) For propellers installed on Aerospatiale (Nord) Model 262A modified by STC SA2369SW, inspect the P/N B-3339 propeller attach bolts in accordance with paragraph (c) below within the next 100 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours time-in-service from the last inspection.

  (b) For propellers installed on Short Brothers Ltd. Model SD3-30 aircraft, inspect the P/N B-3339 propeller attach bolts in accordance with paragraph (c) below within the next 300 hours time-in-service after the effectivedate of this AD, and thereafter at intervals not to exceed 300 hours time-in-service from the last inspection.

  (c) Check the torque with a torque wrench and an appropriate adapter of all eight propeller attach bolts (with washers installed). If the torque of any one of the bolts is found to be less than 90 ft.-lbs., remove, prior to further flight, all eight bolts and washers and replace with new (B-3339) bolts and new (A-2048-2) washers in accordance with Hartzell Instructions No. 140A (Issue 5), dated January 28, 1986, or FAA approved equivalent.

  (d) Notify the Manager, Chicago Aircraft Certification Office, FAA, 2300 East Devon Ave., Des Plaines, Illinois 60018, in writing of any low torqued, less than 90 ft.-lbs., or failed bolts. Also, the hub serial number(s), along with the total time on the bolt(s) and hub(s), must be reported.

Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Chicago Aircraft Certification Office, FAA, 2300 East Devon Ave., Des Plaines, Illinois 60018.

Upon submission of substantiating data by an owner or operator, through an FAA- maintenance inspector, the Manager, Chicago Aircraft Certification Office, may adjust the compliance time specified in this AD.

Hartzell Instructions No. 140A (Issue 5), dated January 28, 1986, identified and described in this directive, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Hartzell Propeller Products Division, TRW Aircraft Components Group, 350 Washington Ave., Piqua, Ohio 45356. This document also may be examined at the Office of the Regional Counsel, FAA, Attn: Rules Docket No. 86- ANE-7, 12 New England Executive Park, Burlington, Massachusetts 01803, weekdays, except Federal holidays, between 8:00 a.m. and 4:30 p.m.

This amendment becomeseffective on March 28, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS P44GL](https://openairdocs.org/tcds/P44GL): Hartzell Propeller LLC; names 1 of 5 models: HC-B5MP-3

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

## Related documents

- [AD 2004-21-01](https://openairdocs.org/ad/2004-21-01) (historical): Attach bolts · Hartzell Propeller HC-B5MP-3 with STC SA2369SW. Effective Oct 19, 2004. Supersedes this AD
- [STC SA2369SW](https://openairdocs.org/stc/SA2369SW): Install P&W ACL PT6A-45A engine.. Frakes Aviation, Inc, Named in the applicability

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