# STC SA3846SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Astraea Aviation Services, dba Dalfort Aviation, United States
- Description: Install dual Tracor 7900 Omega Navigation System and dual B and D true airspeed computers.
- Applied: July 8, 1987
- Status date: January 28, 1994
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/4b/84/4b8416e88bcd3f279ff407b093a3aad8bf67ec869e86e661928005d98a6bc7df
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9E37D0C24217371886257DDC00695C8C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3846SW

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company DC-8-71 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-71F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-72 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-72F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## 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.

Wirittd £tatt» or anrrica Bcpartment of transportation—federal Sttnation Administration Supplemental "Cgpe Certificate SA3846SW Aviation Services, Inc. d/b/a Dalfort Aviation 7701 Lemmon Avenue Dallas, Texas 75209 'M;tyi&Jtu^i&deA&gvn'f(^>£n&f<>t(e>u>tm&fw*>du^Msi^ y?/yy2

•/i*apMV«rnesn&'4&<Ja*J 4b W^jC^Civil Air 4A25 . McDonnell Douglas . DC-8 70 Series Install dual Tracer 7900 Omega Navigation System and Dual B and D True Airspeed computers in accordance with Dalfort Corporation Engineering authorization EA8-34-2 Rev. 3 dated September 4, 1987, and EA8-34-3 Rev. 1 dated August 26, 1987, or later FAA approved revision.

FAA Approved Airplane Flight Manual Supplement dated September 16, 1987, is required.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

c^ ^'U^-£^ • ,^. July 8, 1987 September 16, 1987 '. 1/2 8/94 JUMark R 0 Special Certification Office (Title)

**FAA FOUM 81 10-2(10-68)**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number .

to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ^IP code) from (Name of grantor) (Punt or type) (Address of grantor) (Number and street j (City, State, and £IP cade) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): _

## Every issue (1)

- January 28, 1994: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4b/84/4b8416e88bcd3f279ff407b093a3aad8bf67ec869e86e661928005d98a6bc7df)

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