# STC ST09974SC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Applied Aerodynamics Inc., United States
- Description: Installation of radome
- Applied: January 28, 1999
- Status date: February 7, 2002
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/14/a7/14a7a450dbc32d4f6181bd901cf95f4dfbda4a0057906ef7a227c87f4c0b2968
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C6E9B76EC3C10D285256CC300035EF0.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST09974SC

## ADs that name it (0)

None.

## Approved models (25)

- The Boeing Company 717-200 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-11 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-12 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-13 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-14 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-15 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-15F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-21 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-31 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32 (VC-9C) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32F (C-9A) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32F (C-9B) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-33F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-34 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-34F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-41 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-51 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-81 (MD-81) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-83 (MD-83) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-87 (MD-87) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company MD-88 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company MD-90-30 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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.

Unite*) States (li)f America of transportation - Jfeoeral JVniatian ^bministration (EerttftcateProject Number ST5664SC-T (TXN) ST09974SC * r,-/™/r ,:>•> —— V. Applied Aerodynamics Inc 2265 Valley Branch Ln.

Dallas, TX 75234 rrr/f/trj //rf///r r/rr/tyr fsi //r /y/,r r/fj/y/t/r/- //f/f//r-tff'/iy///-ff/f/r/f,'/7/ //r ///stf/fr/r'rsi-j fr/,f/ rr/ir///r'r/t-j ///r/'r/f/' rf-j •j//rrr/frr//r/-rrst ss/rr/-j Mr fr /'/•//• r's-//f'stf-j-j /'ryfffs-r/jtt'/i/l r/ ' . Srr/-/ JS-'7 r/ /dr . Sfr/fvrf/. ^r'/'rr/f'r/i vr/t/r/ .fy/tr ^Orr/r/fr-rr/r , \wti/'r/- .- A6WE ..Mff/f-f.- McDonnell Douglas .^r,,t/. DC-9-10, -20, -30, -40, and -50 Series;

DC-9-81/-82/-83/-87; MD-88; MD-90-30;

and 7 17-200 ry . Sp/"' ^fJry/i {J/rr/ivr'.- Installation of nose radome in accordance with Master Document List number AA 5000-MDOC-002, Revision C, dated January 18, 2002, or later FAA approved revision.

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.

rs-r/r/frrf/r rf/tf/Mr •Jfyytr/'/fsip r/ff/cr. rr'//r'r/t f'-j //if f'ff.-}f4 /<"/• rf/yss-ffrr/- sif6frr/, •jr/.j/tr/iftr/. /-rrr/-rr/rs- r, /,/•/////ir///r/i f/rr/r /•> r//r/-/r<f'-jr r-i/rf//r.j/r r/r,/,/,/,r,f/ff;,. January 28, 1999 r/s-j-irsff/trs February 07, 2002 rs's/ts/fst S/t /yysr/ /s/t/// (Signature) S. Frances Cox Manager, Special Certification Office Southwest Region (Title) This certificate mav- be

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor)(Print or type) (Address of grantor) (Number £ street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink)

## Every issue (1)

- February 7, 2002: Issued, Current. [certificate](https://openairdocs.org/files/sha256/14/a7/14a7a450dbc32d4f6181bd901cf95f4dfbda4a0057906ef7a227c87f4c0b2968)

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