SERVICE BULLETIN SB 24-3807
Beechcraft G58 Baron · Service Bulletins
Overview
This Service Bulletin (SB 24-3807) issued by Hawker Beechcraft Corporation addresses the replacement of circuit breaker toggle switches in the Beechcraft G58 Baron aircraft. The bulletin is aimed at owners and operators of the G58 Baron, specifically those with serial numbers TH-2126, TH-2127, TH-2131 through TH-2134, TH-2136, TH-2137, TH-2139 through TH-2141, and TH-2143 through TH-2150. It highlights the potential overheating issues with earlier circuit breaker toggle switches and recommends replacing them with improved versions. Compliance is recommended at the next annual inspection or within 24 months, whichever comes first. The bulletin includes detailed instructions for inspection and replacement, as well as information on parts and warranty coverage.
- Affected aircraft serial numbers: TH-2126, TH-2127, TH-2131-2134, TH-2136, TH-2137, TH-2139-2141, TH-2143-2150.
- Recommended compliance at next annual inspection or within 24 months.
- Estimated man-hours for inspection: 1 hour; for inspection and replacement: 4 hours.
- Replacement part numbers for circuit breaker switches range from P/N 35-380132-61 to 35-380132-113.
- Warranty credit available for compliance work performed by authorized service centers.
Document
Source
Originally published by www.bonanza.org. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Service Bulletins
- Year
- 2007
- Pages
- 6
- File size
- 75 KB
- Publisher
- www.bonanza.org
Common. Rarer than 24% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Beechcraft G58 Baron.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Beechcraft G58 Baron for sale now
Free — save the G58 Baron to your watchlist and track it in one place.
More Beechcraft G58 Baronmanuals & documents
See all 30 →- SkyView Autopilot Servo Installation & Maintenance ManualAvionics Manual
- Preliminary Report on the Serious Incident involving Beech Baron 58 aircraftOther Documents
- G5 Electronic Flight Instrument Installation Manual For Experimental/LSA AircraftSpecifications
- WINGS - INSPECT WING NACELLE KEELS FOR MISSING RIVETSParts Catalog
- Garmin G1000 Pilot’s Guide for the Beechcraft G58V Speeds Reference
- BARON G58Flight Manual
- HEATER INSTALLATION INSTRUCTIONS FOR HEATER KIT P/N CD50000K33Maintenance Manual
- PILOT’S OPERATING HANDBOOK AND FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT FOR BEECHCRAFT BARON 58, 58A, G58Pilot's Operating Handbook
- ABS/BPPP Guide to Initial Pilot Checkout: 58P/58TC Pressurized/Turbocharged BaronsTraining Manual
- SERVICE BULLETIN SB 28-4039, REV. 1Service Bulletins
- Beechcraft Baron 55/58 With 2.5” Attached TailpipeSystems Description
- SERVICE BULLETIN SB 21-3877Service Bulletins
If you fly the Beechcraft G58 Baron, you may also be researching these.
In this document
Planning Information
The Service Bulletin applies to Beechcraft G58 Baron aircraft with specific serial numbers. It outlines the reason for the bulletin, which is to address overheating issues reported with circuit breaker toggle switches. The bulletin also specifies that improved switches were introduced in production starting with serial number TH-2125.
Compliance
Hawker Beechcraft recommends that the actions outlined in this Service Bulletin be completed during the next annual inspection or within 24 months of issuance. This ensures that all affected aircraft are updated with the improved circuit breaker toggle switches.
Accomplishment Instructions
The bulletin provides step-by-step instructions for inspecting and replacing the circuit breaker toggle switches. It emphasizes the importance of disconnecting the battery and ensuring that the work area is clean before proceeding with the replacement.
Material Information
The bulletin lists the original part numbers for the circuit breaker toggle switches and their corresponding replacement part numbers. It also notes that not all part numbers may be found on every aircraft.
Warranty Credit
The bulletin outlines warranty coverage for labor and parts related to the compliance with this Service Bulletin. Warranty credit is available for work performed by Hawker Beechcraft Authorized Service Centers.
Safety notes
- Disconnect the battery before starting work on the circuit breaker toggle switches.
- Ensure all tools and foreign objects are removed from the work area before returning the aircraft to service.
Full document text
1 of 6 SERVICE BULLETIN RECOMMENDED SB 24-3807 Issued: May, 2007 The export of these commodities, technology or software are subject to the U.S. Export Administration Regulations. Diversion contrary to U.S. law is prohibited. For guidance on export control requirements, contact the Commerce Department's Bureau of Export Administration at http://www.bis.doc.gov. Hawker Beechcraft Corporation (HBC) issues Service Information for the benefit of owners and fixed base operators in the form of two classes of Service Bulletins. The first class, Mandatory Service Bulletins (red border) includes changes, inspection and modifications that could affect safety or crashworthiness. HBC also issues Service Bulletins with no red border which are designated as either recommended or optional in the compliance section within the bulletin. In the case of recommended Service Bulletins, HBC feels the changes, modifications, improvements or inspections will benefit the owner/operator and although highly recommended, Recommended Service Bulletins are not considered mandatory at the time of issuance. In the case of Optional Service Bulletins, compliance with the changes, modifications, improvements or inspections is at the owner/operator's discretion. Both classes are available on the web at http://pubs.hawkerbeechcraft.com and mailed to: (a) Owners of record on the FAA Aircraft Registration Branch List and the HBC Safety of Flight Information (SOFI) List. (b) Those having a publications subscription. Information on Safety of Flight Information (SOFI) or subscription can be obtained through the Hawker Beechcraft Corporation Technical Manual Distribution Center (TMDC). As Mandatory Service Bulletins and Service Bulletins are issued, the Service Bulletin Master Index will be updated and available online at http://pubs.hawkerbeechcraft.com. Warranty will be allowed only when specifically defined in the Service Bulletin and in accordance with HBC Warranty Policy. Unless otherwise designated, HBC Mandatory Service Bulletins, Service Bulletins and HBC Kits are approved for installation on HBC airplanes in original or HBC modified configurations only. HBC Mandatory Service Bulletins, Service Bulletins and Kits may not be compatible with airplanes modified by STC installations or modifications other than HBC approved kits. Beechcraft 1. Planning Information A. Effectivity (1) Airplanes Beechcraft G58 Baron, Serials TH-2126, TH-2127, TH-2131 through TH-2134, TH-2136, TH-2137, TH-2139 through TH-2141, and TH-2143 through TH-2150. If you are no longer in possession of the airplane, please forward this information to the present owner. (2) Spares Spare units according to the original part numbers listed in Paragraph 2.C. B. Reason Hawker Beechcraft Company (HBC) had received reports from piston owner/operators of circuit breaker toggle switches becoming overheated. These circuit breaker toggle switches were utilized in various electrical systems throughout the airplane. HBC issued Recommended Service Bulletin 24-3735 to address this issue. In addition, improved circuit breaker toggle switches were incorporated into production beginning with airplane Serial Number TH-2125. HBC has received reports that the earlier circuit breaker toggle switches may have inadvertently been installed in the airplanes noted in EFFECTIVITY, Paragraph 1.A. This Service Bulletin is being issued to inspect airplanes for the earlier circuit breaker toggle switches and replace with improved circuit breaker toggle switches, as noted in MATERIAL INFORMATION, Paragraph 2.C. TITLE: ELECTRICAL POWER - CIRCUIT BREAKER SWITCH REPLACEMENT SERVICE BULLETIN Issued: May, 2007 SB 24-3807 2 of 6 RECOMMENDED C. Description This Service Bulletin provides replacement part number information for the circuit breaker toggle switches. The P/N 35-380132-1 through 35-380132-53 circuit breaker toggle switches were superseded by P/N 35- 380132-61 through 35-380132-113 circuit breaker toggle switches with improved internal isolation as a product improvement. D. Compliance Hawker Beechcraft Corporation recommends that this Service Bulletin be accomplished at the next annual inspection, but no later than 24 months, whichever occurs first. E. Approval The engineering data contained in this Service Bulletin is FAA approved. F. Manpower The following information is for planning purposes only: Estimated man-hours for inspection only: 1 hour. Estimated man-hours for inspection and replacement: 4 hours. Suggested number of men: 1 man. The above is an estimate based on experienced, properly equipped personnel complying with this Service Bulletin. Occasionally, after work has started, conditions may be found which could result in additional man-hours. G. Weight and Balance None. H. Electrical Load Data Not changed. I. Software Accomplishment Summary Not applicable. J. References The appropriate chapter of the Beechcraft Model 58/G58 Maintenance Manual, P/N 55-590000-13F or subsequent revision; The appropriate chapter of the Beechcraft Model G58 Wiring Diagram Manual, P/N 58-590001-3 or subsequent revision. SERVICE BULLETIN Issued: May, 2007 3 of 6 SB 24-3807 RECOMMENDED K. Publications Affected It is recommended that a note “See Service Bulletin No. 24-3807” be made in the following: The appropriate chapter of the Beechcraft Model B55/E55/58/G58 Illustrated Parts Catalog, P/N 58- 590000-19G or subsequent revision; The appropriate chapter of the Beechcraft Model G58 Wiring Diagram Manual, P/N 58-590001-3 or subsequent revision. 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. Warranty coverage offered in this Service Bulletin will expire 24 months from the last day of the month this Service Bulletin is issued. After that date, the owner/operator assumes the responsibility
Show full textShow less
for compliance cost. Hawker Beechcraft Corporation reserves the right to void warranty coverage in the area affected by this Service Bulletin until the date the Service Bulletin is accomplished by a Hawker Beechcraft Corporation Authorized Service Center. All warranty work must be accomplished by a Hawker Beechcraft Authorized Service Center rated to perform maintenance on the specific model of Beechcraft Airplane. All warranty reimbursements are handled through Hawker Beechcraft Corporation Authorized Service Centers. The owner/operator should arrange for an Authorized Service Center to perform the work and the Authorized Service Center must submit the standard Hawker Beechcraft Corporation warranty claim. 2. Material Information A. Materials - Price and Availability Contact a Hawker Beechcraft Authorized Service Center for information. B. Industry Support Not applicable. SERVICE BULLETIN Issued: May, 2007 SB 24-3807 4 of 6 RECOMMENDED C. Airplanes NOTE Not all part numbers for circuit breakers referenced in the table below will be found on any particular airplane. The “Original Part Number” column lists the part number(s) for circuit breaker toggle switches that may be installed and the “Replacement Part Number” column lists the corresponding part number(s) for replacement circuit breaker toggle switches. The following parts required for this modification may be ordered through a Hawker Beechcraft Authorized Service Center or RAPID: Original Part Number Description Replacement Part Number 35-380132-1 Circuit Breaker Toggle Switch 35-380132-61 35-380132-3 Circuit Breaker Toggle Switch 35-380132-63 35-380132-5 Circuit Breaker Toggle Switch 35-380132-65 35-380132-7 Circuit Breaker Toggle Switch 35-380132-67 35-380132-9 Circuit Breaker Toggle Switch 35-380132-69 35-380132-11 Circuit Breaker Toggle Switch 35-380132-71 35-380132-13 Circuit Breaker Toggle Switch 35-380132-73 35-380132-15 Circuit Breaker Toggle Switch 35-380132-75 35-380132-17 Circuit Breaker Toggle Switch 35-380132-77 35-380132-19 Circuit Breaker Toggle Switch 35-380132-79 35-380132-21 Circuit Breaker Toggle Switch 35-380132-81 35-380132-23 Circuit Breaker Toggle Switch 35-380132-83 35-380132-25 Circuit Breaker Toggle Switch 35-380132-85 35-380132-27 Circuit Breaker Toggle Switch 35-380132-87 35-380132-29 Circuit Breaker Toggle Switch 35-380132-89 35-380132-31 Circuit Breaker Toggle Switch 35-380132-91 35-380132-33 Circuit Breaker Toggle Switch 35-380132-93 35-380132-35 Circuit Breaker Toggle Switch 35-380132-95 35-380132-37 Circuit Breaker Toggle Switch 35-380132-97 35-380132-39 Circuit Breaker Toggle Switch 35-380132-99 SERVICE BULLETIN Issued: May, 2007 5 of 6 SB 24-3807 RECOMMENDED Hawker Beechcraft Corporation expressly reserves the right to supersede, cancel and/or declare obsolete, without prior notice, any parts or publications that may be referenced in this Service Bulletin. D. Spares Refer to MATERIAL INFORMATION, Paragraph 2.C. E. Reidentified Parts None. F. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions This Service Bulletin shall be accomplished as follows: NOTE Should any difficulty be encountered in accomplishing this Service Bulletin, contact Hawker Beechcraft Corporation at 1-800-429-5372 or 316-676-3140. A. Airplane 35-380132-41 Circuit Breaker Toggle Switch 35-380132-101 35-380132-43 Circuit Breaker Toggle Switch 35-380132-103 35-380132-45 Circuit Breaker Toggle Switch 35-380132-105 35-380132-47 Circuit Breaker Toggle Switch 35-380132-107 35-380132-49 Circuit Breaker Toggle Switch 35-380132-109 35-380132-51 Circuit Breaker Toggle Switch 35-380132-111 35-380132-53 Circuit Breaker Toggle Switch 35-380132-113 Original Part Number Description Replacement Part Number SERVICE BULLETIN Issued: May, 2007 SB 24-3807 6 of 6 RECOMMENDED Observe all Warnings and Cautions contained in the aircraft 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) Remove all power from the airplane and disconnect the battery. Display warning notices prohibiting reconnection of airplane electrical power. NOTE Not all part numbers for circuit breakers referenced in the table of MATERIAL INFORMATION, Paragraph 2.C. will be found on any particular airplane. The “Original Part Number” column lists the part number(s) for circuit breaker toggle switches that may be installed and the “Replacement Part Number” column lists the corresponding part number(s) for replacement circuit breaker toggle switches. (2) Inspect the subpanel circuit breaker toggle switches for correct part numbers (as listed in the right hand column of the table of MATERIAL INFORMATION, Paragraph 2.C. under the heading “Replacement Part Number”). If a correct part number is found on each circuit breaker toggle switch, skip steps (3) through (5) and proceed to steps (6) and (7). If an incorrect part number is found, (as listed in the left hand column of the table of MATERIAL INFORMATION, Paragraph 2.C. under the heading “Original Part Number”), accomplish steps (3) through (7) for replacement of each incorrect part number circuit breaker toggle switch. (3) Remove the existing circuit breaker toggle switch and replace with the new switch. Refer to MATERIAL INFORMATION, Paragraph 2.C. (4) Reconnect the airplane battery, remove warning notices and restore power. (5) Perform test procedures on the applicable system serviced by the replaced circuit breaker toggle switch. Refer to the appropriate chapter of the Beechcraft Model 58/G58 Maintenance Manual. (6) Ensure all work areas are clean and clear of tools and miscellaneous items of equipment. (7) Return airplane to service. B. Spares Refer to MATERIAL INFORMATION, Paragraph 2.C. and purge all incorrect circuit breaker toggle switch stock as defined in step (2) of ACCOMPLISHMENT INSTRUCTIONS. C. Record of Compliance Upon completion of this Service Bulletin, make an appropriate maintenance record entry.