# STC SA00725NY-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Contact Aviation LLC, United States
- Description: Installation of Honeywell, Inc. Dual ADZ-810 Air Data Systems.
- Applied: June 27, 1998
- Status date: May 15, 2012
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A27CE](https://openairdocs.org/tcds/A27CE)
- Certificate PDF: https://openairdocs.org/files/sha256/c3/31/c331c0c79f5eb37a2c9d11f5730fac08bae51cd8c26af143522457e424ca5dc6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3D5BAFF705F2BFCB86257A77007124E9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA00725NY-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 501 ([TCDS A27CE](https://openairdocs.org/tcds/A27CE))

## 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.

Part 23 of the Federal Aviation Regulations. Per the TCDS Certification Basis

Installation of Honeywell, Inc. Dual ADZ-810 Air Data Systems, in accordance with Delta Engineering, L.P. Master Drawing List 157-03729-340, Revision A, dated July 31, 1998.

1. The aircraft must be maintained in accordance with Delta Engineering, L.P. Maintenance Manual Supplement (Instructions for Continued Airworthiness), Document 757-03737-340, Revision -, dated July 31, 1998.

2. Delta Engineering, L.P. Airplane Flight Manual Supplement for Century V Eagle Cessna Model 501SP when modified by installation of Honeywell, Inc. Dual ADZ-810 Air Data Systems, Document No. 657-03752-340, Revision -, dated Jul. 31, 1998, FAA approved Jul. 31, 1998 is required for this installation.

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

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

Contact Aviation LLC 12496 Alcoy Drive Fenton, MI 48430 A27CE Make : Cessna Aircraft Company.

Model : Model 501 Date of application : June 27, 1998

Date of issuance : July 31, 1998

Date reissued : June 17, 1999, May 15, 2012

( Signature) Steven L. Lardinois Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

( Title)

## Every issue (1)

- May 15, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c3/31/c331c0c79f5eb37a2c9d11f5730fac08bae51cd8c26af143522457e424ca5dc6)

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