STC SA4624SW

Supplemental type certificate · Howell Instruments Inc

Holder
Howell Instruments Inc · United States
Status
Current · Amended
Status date
January 5, 2005
Product
Aircraft · Large Multi-Engine
Certification basis
Part 21
Data sheet
TCDSA3EU

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Project No. SA7916SC-T SHC

Number SA4624SW This Certificate issued to Howell Instruments, Inc.

3479 W. Vickery Blvd.

Fort Worth, TX 76107

Part 10 of the Civil Air Regulations.

Original Product Type Certificate Number : A3EU Make : Raytheon Aircraft Co.

Model : BH. 125-400A; DH. 125-1A/S-522; DH. 125-3A/RA;

DH. 125-400A; DH.125-3A; HS. 125-700A

Description of Type Design Change: Installation of Howell N1, N2 and ITT indicators according to Drawing List No. 810400, Revision A, dated July 30, 2004, or later FAA approved revision. FAA approved Airplane Flight Manual Supplement No. FES1495AFMS, Rev. A, dated November 22, 2004, or later FAA approved revision is required.

Limitations and Conditions: 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 08, 1982

Date of issuance : March 11, 1982 Date reissued :

Date amended : January 05, 2005

( Signature) S. Frances Cox Manager, Special Certification Office Southwest Region

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

Number SA4624SW Date of Issuance: March 11, 1982 Date Amended: January 05, 2005

Model (Continued):

-400A ; DH.125-3A ; HS. 125 -700A

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 6

MakeModelData sheet
Raytheon Aircraft CompanyBH.125 Series 400AA3EU
Raytheon Aircraft CompanyDH.125 Series 1A/S-522A3EU
Raytheon Aircraft CompanyDH.125 Series 3AA3EU
Raytheon Aircraft CompanyDH.125 Series 3A/RAA3EU
Raytheon Aircraft CompanyDH.125 Series 400AA3EU
Raytheon Aircraft CompanyHS.125 Series 700AA3EU