# STC SH296NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: ASI Services LLC, United States
- Description: Installation of Detroit Diesel Allison 250-C30P turboshaft engine and associated airframe and tail rotor control modifications similar to the model 206L-3.
- Applied: November 18, 1981
- Status date: October 17, 2006
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/f2/2d/f22d3f8f0dcc3c4590c15b5c5e21fe969d88587b3b713dd976ee3ff96f457621
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D826E4E762FC946A8625721B00643430.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH296NM

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron (Canada) 206L-1 ([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.

~nile~ ~lltle5 (Jj}f j\mericlt ~epartnumt of 'illrausportatiou - JIfeb'eral J\biatiou J\b'ministratiou ~uppl£nt£ntal 'QItlP£QI£rtifirat£This certificate reissued to replace certificate reported lost JV~p SH296NM ASI Services LLC 21617 North 2nd Avenue Phoenix, Arizona 85027 ~rb;4",,J- d'O'/ /~ r~O'/1?" ~/b ~ 1Y/""rk,~?'b./6, /~ ./6/t'6m~/,:? /tny/u,./ m~d de. lJ:nu~O'ho,,~ O'Ad N"UUUO/I~ ~,r,yg, O'~J.¥Ir",,/tea ~,reo", /,Iurl:;. de ru;.mo,r~/u!~ r",?ru.:re/,IU'/Ia o/rl/I,;,/ 6 0/~ ~'m"/.A~;. .Y6o/r~&hO"-4. as specified in 206L Data Sheet H2SW C!t-&r,;'ur/"00rbu/ .~/"'" ~rH,i'ilvrM .//w""",&,.' H2SW .~{;u"&'.' Bell Helicopter .~(;or~~.' 206L-I .~,;c.rVI4o/l. O/~/" ~,;~". 7?£,u,:?",'Installation of Detroit Diesel Allison 250-C30P turboshaft engine and associated airframe and tail rotor control modifications similar to the Model 206L-3 in accordance with Air Services International FAA Sealed Master Drawing List, ASI Installation anual, and ASI-206L-I-FM Flight Manual FAA approved April 6, 1982, or later FAA approved 'isions as required as part of this modification.

cser/./UXO'hO/I-4 O'/u/ 7J:./I~UO/I<J..' Approval of this change in type design applies basically to the above-listed model only. This approval should not be extended to other specific helicopters of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of the other previously approved modifications will introduce no adverse effect upon the airworthiness of the above-listed helicopter. 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 .

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November 18,1981 April 6, 1982 !!ArM/"e,:J.JrN!I/.' Jan. 24, 2005; Oct. 17,2006 Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office (Title) 9Lnya[terationof this certijialteis punisfia6fe6y afine of not ~ceding $1,()()(), or imprisonmentnot ~ceding 3 years,or 60tli.

FAA Form 8110-2 (10-681 Page 1 of 4 'l!iiscertificatemay6etransfmeainIUCOraaru:ewitli1"5l.!1(21.47.

~nite~ ~tlltel:l <IDfJ\meriCll ~epartment of 'IDransportation - Jlfeoeral. ~&iation J\bministration ~uppl£mcntal '(filJP£{[£rtificat.e (QIontinuation ~4£et) ./V~ SH296NM These continuation sheets are a part of Supplemental Type Certificate No. SH296NM.

The limitations and conditions of Type Certificate No. H2SW apply except as outlined below:

VII. Model206L-l (Normal Category) Modified by STC SH296NM Engine Allison Model 250-C30P with Bendix gas producer Fuel Control DP-VI and Bendix Power Turbine Governor AL-ADI Engine Limits Torgue Pressure Output Shaft Speed Turbine Outlet Temp.

Gas Generator Speed Takeoff (5 min.)

Max. Continuous 100% (62 psi) 435 shp 85% (53 psi) 370 shp 100% (6,016 rpm) 100% (6,016 rpm) 1414OF(768°C) 1320°F (716°C) 105% (53,550 rpm) 105% (53,550 rpm) (See Rotorcraft Flight Manual for Transient Limits) __ -II _-II9CJ5,1I "ulI-IIIlJl2.A .

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C. G. Range 5l.nya[terationof this certificateis punisfia6fe6y a fine of not ~cmfing $1,000, or imprisonmentnot ~cmfing 3 years,or 60th.

FM Form 8110-2 (10-681 Page 3 of 4 'Ifiiscerti.fimternay6etransfareain aaxm{ancewith :J5l!l(21.47.

Maximum Weight ;mniie~ j8iaiesflIH)\merica ~epartment of 'Q1rau5portation - Jlfeberal J\&iation J\ltministration ~upplrmental <QIllprQIrrtifiratr (Q1nntinuatinn ~4ed) ./V~ SH296NM 4150 1bs. (Internal Loading) 4250 !bs. (External Loading) Rotorblade and Control Movement Serial Nos. Eligible For rigging information, refer to ASI Installation Instructions.

45557 and subsequent or prior Serial Nos. with PIN 206-011-149-101 Main Rotor Yoke Installed according to FAA approved instructions.

-END- 5'Lnga{teratUmof tfiis certificateis punisfia6fe6y a fine of not ei{eeeaing$l/)(}(),or imprisonmentnot ei{eeeaing3 yeors, or 6otfi.

## Every issue (2)

- October 17, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f2/2d/f22d3f8f0dcc3c4590c15b5c5e21fe969d88587b3b713dd976ee3ff96f457621)
- January 24, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/63/9e/639ecee04eb6d55bd6ca65fb5aa7312e8cf8d4aa11e1745fe0e72e48138405f4)

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