J;mvkel' 'i?eechcraft 

MANDATORY 

SERVICE BULLETIN 

TITLE: FLIGHT CONTROLS -INSPECTION I REPLACEMENT OF PITCH TRIM ACTUATOR 

1. Planning Information 

A. Effectivity 

( 1) Airplanes 

Model400, Beechjet, Serial RJ-1 through RJ-65; 

Model 400A. Beechjet, Serials RK-1 through RK-353; 

Model 400A, Beechjet (Hawker 400XP), Serials RK-354 through RK-604: 

Modei 400T (T-1 A), Beechjet, Serials TT-1 through TT-180; 

Modei400T {TX), Beechjet, Serials TX-1 through TX-13. 

If you are no longer in possession of the airplane, please forward this information to the present 

owner. 

(2) Spares 

Refer to Table 1 (commercial) and Table 2 (military) of this Service Bulletin. 

B. Reason 

This Service Bulletin is being issued in response to a report of an unanticipated operational disruption due 

to mechanical feedback from the pitch trim actuator (PTA) to the pilot during flight. Upon inspection, the 

PTA exhibited accelerated thread wear on the ACME nut that mates with the jackscrew. The supplier has 

identified units to be pre-emptively overhauled. 

l~~~~~~iu~ ~:~Ja'ff~~c~!·~~s::~c:~rry% ur~;! ~~:~b~~10 

export control reqwremcnts, :~~ 0~~~~ contact tt\e Comme.tce Oep.artmcnr.s aure~u of E:{port AdmtnJstr.tliOI'l at http /Mww t>•S dOC gov 

Hawker 8eec:haatt Corporat1on tHBC} tssucs Sef"'.Ace tnforma!ioo fOf' the benefit of o-..,mr$ ~nd 

Mandotory 

f1xcd base operators 10 the form ot !'>No daz.~s of Sct"v1te 81Jifcbn~ The 1ir'l dass, SerVIce Ouffetm) {ted border) •ntJudes dtange5, mspectlon and mOdJflcatiOilS th<U could aNect safely or crashwor1hme$$ HOC also >Ssucs Servtce Bulel•n$ w11h no rod border wfl•CI1 are des.gnated as t>1ther recommended or op1tonaltn the compltance $Cebon wrth1n the bulletin tn tne case of tecommooded SeMGe B~~!!e11f'IS, HSC f~!s. l.he changes, mO(M~tioos . rrnp~ovemen1s Of 1nspechons WJII ooner1t the owner/operator a1~d aJthotJgh h1ghly recommended Recommcndea Servte(!' Bulre'bns. ~1e not a:ms,dered mandai Of)' af the lime of •ssuance In the case of Oplional Sern~ Butret1ns. compl.I.!U\Ce y.nth the ehal'\ges., modifications, tmpt'OIIements or mspect1ons is at the ownefloperator's d•scrctJon 

Issued: March. 2012 

Ooth claues <:~re available 011 the web at hUJ) llpubs hawketbe-td\tfaft com and malfeG to 

(o) Owners of reeo<d on the FAA Airaan RC9••tratoon Braneh L~>t 3nd tile HBC Safely of Foght Information (SOFt) Uot 

(D) ThOse h;~VJng a pubfJeahons subsaiPttOn 

lnformat>o<~ on Safely of Fl19hl InformatiOn iSOFil or suDscript1on c.an be oblained throug~ the Hawker Oee-chaaft CorporatiOO TectuUcaJ Manual Otsln.Dtltlon Center (TMOC) As Mandatory Serv~ce Bulletins aod Se.MCe Bulletms are issued . the SeMce 8ullerm Master lrnfux wdl be upt;'l.~!ed and avallable 011hnc at http //pubs a-M<e:~chuan eom V\.'a.rranty w1J1 ~ aiJowed only when s.peofc.ally dCflrlCd U1 the SefVICC Bulletin and 1n accorda~ With HOC Warranty PoliC)' 

Unless othef'NISC desl{)nated, HSC Mandatory Serv1ce Bullcbns, Sctvice Gu-llebn.s and HBC k:JtS itre apnroved for •lSlallatJCn on HBC a:ir~:sncs '" ong.nal ot HBC mo<hf~ed conhgurutions only HBC Mandat?fY Service Bulletins, SeMCe Bulletins and Krts may not be compatible wtth owptanes mo«Jrhed by STC ,nstan .. 1ttons or mOOfiedhOfl$ other tt'la.n HBC approved ktls 

58 27-4100 

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];IIWictw <Meechcraft 

MANDATORY 

SERVICE BULLETIN 

C. Description 

determine 

This Service Bulletin provides instructions to conduct a review of the airplane's maintenance records to 

if the installed PTA is suspect for accelerated wear of the ACME nut component. Affected PTA 

serial and part numbers are listed in Table 1 (commercial airplanes) and Table 2 (military airplanes). 

If determination cannot be made based on the maintenance records, a visual inspection of the installed 

PTA dataplate is necessary. If the installed PTA serial number is identified in Table 1 or Table 2, the PTA is 

replaced with an overhauled or serviceable assembly. 

D. Compliance 

(1) Civil Airplanes 

An Airworthiness Directive will be requested on the matter covered by this Service Bulletin. 

Hawker Beechcraft Corporation considers this to be a Mandatory Service Bulletin. It must be 

accomplished at the next scheduled inspection, within 200 flight hours, or six (6) months from 

issuance of this Service Bulletin, whichever occurs first. 

(2) Military Airplanes 

For compliance information on military airplanes affected by this Service Bulletin, contact the 

appropriate headquarters. 

E. Approval 

The engineering data contained in this Service Bulletin is FAA approved. 

This modification is classified Minor per FAA Order 8110.52. 

Prior to accomplishment

States 

, owners/operators of airplanes registered in countries other than the United 

shall consult with their local Aviation Regulatory Authority. 

F. Manpower 

The following information is for planning purposes only: 

NOTE 

No warranty coverage will be allowed for the inspection portions of this Service 

Bulletin. 

Estimated man-hours for removal and replacement of the PTA: 10.0 hours 

Suggested number of technicians: 1 

The 

Service 

above is an estimate based on experienced, properly equipped technicians complying with this 

Bulletin. 

G. Weight and Balance 

No change. 

II is the responsibility of the owner/operator to maintain compliance with the applicable Airworthiness 

Regulations. 

Issued: March. 2012 SB 27-4100 

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J"7mvkel' 'i?eechcraft 

H. Electrical Load Data 

No change. 

SERVICE BULLETIN 

I. Software Accomplishment Summary 

Not applicable. 

J. References 

MANDATORY 

Beechjet Model 400/400A (Hawker 400XP) Maintenance Manual (MM), PIN 128-590001-9, Revision C23 

or subsequent, Chapter 27-40-00; 

T-1A Aircraft Technical Manual Job Guide, P/N TO 1T-1A-2-27 JG-40-1 ; 

T-400 Aircraft Technical Manual Job Guide, PIN TOT 400-2-27 JG-40-1. 

K. Publications Affected 

None. 

L. Interchangeability of Parts 

Not applicable. 

M. Warranty Credit 

( 1) Civil Airplanes 

Warranty credit for labor and parts to the extent noted under MANPOWER and MATERIAL will be 

allowed on all affected airplanes with the suspect PTA serial numbers listed in Table 1 of this Service 

Bulletin. Claims for compliance with this Service Bulletin are to be filed as a W4-type claim against 

SB 27-4100. 

Warranty coverage offered in this Service Bulletin will expire six (6) months from the last day of the 

month this Service Bulletin is issued. After this date, the owner/operator assumes the responsibility 

for compliance cost. Hawker Beechcraft Corporation (HBC) reserves the right to void continued 

warranty coverage in the area affected by this Service Bulletin until the date the Service Bulletin is 

accomplished by a Hawker Beechcraft Services (HBS) facility. 

The owner/operator must contact HBS to schedule this Service Bulletin work to be accomplished. 

HBS will submit the appropriate paperwork directly to the HBC Warranty Department for warranty 

consideration. Hawker Beechcraft Corporation liability shall be limited to the remaining prorated life 

of the affected part, based on an 1 ,800-hour Time Between Overhaul (TBO). For example, if the 

affected part has 1,350 hours based on an 1 ,800-hour TBO, HBC will provide 25% of the cost of 

replacing the part. 

The removed suspect PTA assemblies SHALL be red-tagged and returned to HBC at the following 

address in order to receive warranty consideration: 

Hawker Beechcraft Corporation 

Attn: Warranty Hold Area 

370 N. Webb Rd., East Dock, Bldg 66 

Wichita, KS 67206 

After the Service Bulletin has been accomplished, a warranty claim must be submitted to HBC within 

60 days of the Service Bulletin completion date. 

Issued: March, 2012 SB 27-4100 

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];IIWkBI' 1?eechcraft 

MANDATORY 

SERVICE BULLETIN 

(2) Military Airplanes 

For information on PTAs installed on military airplanes affected by this Service Bulletin, refer to Table 

2 and contact the appropriate headquarters. 

2. Materiallnformation 

A. Materials - Price and Availability 

Contact information: 

Hawker Beechcraft Parts & Distribution (HBP&D) 

10511 East Central Avenue 

Wichita. KS 67206 

USA 

Phone: 316-676-3100 or 1-888-727-4344 

Fax: 316-676-3222 or 316-676-3327 

E-mail: HBC _Parts@hawkerbeechcraft.com 

B. Industry Support 

Not applicable. 

C. Airplanes 

The following parts required for accomplishment of this Service Bulletin may be ordered through a Hawker 

Beechcraft Authorized Service Center or HBP&D: 

Part Number Description Quantity Per Airplane 

45AS61 023-143 OVH (commercial) Actuator - Pitch Trim 1 

OR 

132-380000-13 (military) 

w

Hawker Beechcraft Corporation expressly reserves the right to supersede, cancel and/or declare obsolete, 

ithout prior notice, any parts or publications that may be referenced in this Service Bulletin. 

D. Spares 

P/N 45AS61023-143 (commercial) or PIN 132-380000-13 (military). 

E. Reidentified Parts 

Pitch trim actuators reworked per this Service Bulletin will have suffix "SB-27-1" added to the existing serial 

number field on the dataplate. 

F. Tooling -Price and Availability 

Not applicable. 

Issued: March. 2012 SB 27-4100 

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MANDATORY 

SERVICE BULLETIN 

3. Accomplishment Instructions 

This Service Bulletin shall be accomplished as follows : 

A. Airplane 

NOTE 

Should any difficulty be encountered in accomplishing this Service Bulletin, 

contact Hawker Beechcraft Corporation at 1-800-429-5372 or 316-676-3140 or 

contact appropriate headquarters for military airplanes . 

I WARNING I 

Observe all Warnings and Cautions contained in the airplane manuals 

referenced in this Service Bulletin. 

Whenever any part of this system is dismantled, adjusted, repaired or 

renewed, detailed investigation must be made on completion to make sure 

that distortion, tools, rags or any other loose articles or foreign matter that 

could impede the free movement and safe operation of the system are not 

present, and that the systems and installations in the work area are clean. 

(1) Determine if the installed PTA is suspect for accelerated wear of the ACME nut component per the 

following applicable steps: 

(a) Review the airplane's maintenance records for affected PTA part and serial numbers as listed in 

Table 1 (commercial) or Table .2 (military) of this Service Bulletin. 

(i) If the PTA serial numbers match those listed in Table 1 or Table .2, the PTA should be 

replaced with an overhauled or serviceable assembly. Proceed to Step (.2). 

(ii) If PTA serial numbers are not listed in Table 1 or Table .2 , no further action is needed. 

Proceed to Step (9). 

(b) If a determination cannot be made through records research, perform a visual inspection of the 

installed PTA. Access the PTA and view the component dataplate for applicable part and serial 

numbers listed in Table 1 or Table 2. Refer to PITCH TRIM UPPER FORWARD ACCESS 

PANEL (BULLET) REMOVAL in MM, Chapter 27-40-00 (commercial) or appropriate Job Guide 

(military). 

(i) If the PTA serial numbers match those listed in Table 1 or Table 2, the PTA should be 

replaced with an overhauled or serviceable assembly. Proceed to Step (2). 

(ii) If PTA serial numbers are not listed in Table 1 or Table .2, no further action is needed . 

Proceed to Step (8). 

Issued: March, 2012 SB 27-41 00 

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~VIIWke 1?eechcraft 

SERVICE BULLETIN 

-- ··-· ~-~ ... 

HBC Part Number 

45AS61 023-143 

45AS61 023-143 

45AS61023-143 

45AS61 023-143 

45AS61023-143 

45AS61023-143 

45AS61023·143 

45AS61 023-143 

45AS61023-143 

45AS61 023-143 

45AS61023-143 

45AS61023-143 

1--- 45AS61 023-14 3 

45AS61023-143 

45AS61 023-143 

45AS61023-143 

45AS61023-143 

45AS61023-143 

45AS61023-143 

45AS61023-143 

45AS61 023-143 

HBC Part Number 

132-380000-13 

132-380000-13 

132-380000-13 

132-380000-1 3 

132-380000-13 '------

Issued: March. 2012 

Table 1 

(Commercial) 

Model 400/400A (Hawker 400XP) 

Supplier Part Number 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51 M 11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51 M 11 

AA-45-51M11 

AA-45-51 M 11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51M11 

AA-45-51 M11 

AA-45-51 M 11 

AA-45-51M11 

AA-45-51 M 11 

Table 2 

(Military) 

Model 400T (TT/TX) 

Supplier Part Number 

AA-45-51 M12 

AA-45-51 M 12 

AA-45-51 M12 

AA-45-51M12 

AA-45-51 M 12 

MANDATORY 

Serial Number 

10 

11 

22 

33 

000402 

000411 

910906 

920105 

920503 

921009 

940309 

940402 

961002 

970609 

990908 

67637015 

68372010 

ET0041 

ET0056 

ET0066 

ET0072 

Serial Number 

931101 

950603 

951104 

960102 

961202 

SB 27-4100 

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.-~'711WkBI' 'Deechcraft 

MANDATORY 

SERVICE BULLETIN 

(2) 

reconnection 

Remove all power from the airplane and disconnect the battery. Display warning notices prohibiting 

of airplane electrical power. 

(3) 

procedure 

Remove the pitch trim actuator from the airplane. Refer to PITCH TRIM ACTUATOR REMOVAL 

in MM. Chapter 27-40-00 (commercial) or appropriate Job Guide (military). 

(4) Red-tag and return suspect PTAs to the address listed in Step 1. M. Warranty Credit 

(5) 

ACTUATOR 

Upon receipt of the overhauled PTA, install the unit into the airplane. Refer to PITCH TRIM 

Guide 

INSTALLATION procedure in MM, Chapter 27-40-00 (commercial) or appropriate Job 

(military). 

(6) Reconnect the airplane battery, remove warning notices. and restore power. 

(7) 

appropriate 

Perform PITCH TRIM FUNCTIONAL TEST. Refer to MM, Chapter 27-40-00 (commercial) or 

Job Guide (military). 

(8) Perform the PITCH TRIM UPPER FORWARD ACCESS PANEL (BULLET) INSTALLATION 

procedure in MM. Chapter 27-40-00 (commercial) or appropriate Job Guide (military). 

(9) Ensure all work areas are clean and clear of tools and miscellaneous items of equipment 

(1 0) Return airplane to service. 

B. Spares 

Red-tag and return suspect PTAs to the address listed in Step 1. M. Warranty Credit 

C. Record of Compliance 

Upon completion of this Service Bulletin, make an appropriate maintenance record entry. 

Issued: March, 2012 SB 27-4100 

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