# STC ST00051BO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Pratt & Whitney Engine Services Inc., United States
- Description: Installation of a Pratt & Whitney Engine Services, Inc. Health Usage Monitoring System (HUMS) Model 1122, P/N HUMS-A-070-1.
- Applied: January 17, 1996
- Status date: October 22, 2007
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/2f/19/2f1992ac7a80ddac6b6ad7142193a2fda2f699b1b7042a8def44c04bf26ad99d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CA48AC106D0876198625738E004F7B54.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST00051BO

## ADs that name it (0)

None.

## Approved models (9)

- Bell Helicopter Textron (Canada) 206 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206A-1 (OH-58A) ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206B-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

249 Vanderbilt Ave.

Norwood, MA 02062

Part 27 of the Federal Aviation Regulations.

Original Product Type Certificate Number : H25W Make : Bell

Model : 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4

Installation of a Pratt & Whitney Engine Services, Inc. Health Usage Monitoring System (HUMS) Model 1122, P/N HUMS-A-070- 1, in accordance with their HUMS Installation Instructions, HUMS-I-070-1, Version 1.1, dated February 2, 1996, or later FAA- approved revisions.

1. Federal Aviation Administration approval of the HUMS installation was determined on a non-interference basis. Operation or maintenance must not be predicated on the HUMS.

2. Compatibility of this design change with previously approved modifications must be determined by the installer.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application : January 17, 1996

Date of issuance : February 9, 1996 Date reissued : August 15, 2002, October 22, 2007

( Signature) Robert G. Mann Manager, Boston Aircraft Certification Office

( Title)

## Every issue (1)

- October 22, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/2f/19/2f1992ac7a80ddac6b6ad7142193a2fda2f699b1b7042a8def44c04bf26ad99d)

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