Page 33 - Volume 11 Number 1

Reason: This Service Bulletin is being issued to provide safety information once more regarding usage of unauthorized or altered flight control (gust) locks on various Beech propeller airplanes. Numerous accidents and casualties over the years have resulted from the failure of a pilot to remove an unauthorized or altered flight control (gust) lock prior to attempted takeoff. A review of the records from these accidents, dating back to 1975, has revealed that many of the accidents involved use of a make­shift control (gust) lock that was not the one provided by Textron Aviation. In some cases, a common bolt or nail had been inserted through the hole provided in the control column for the flight control (gust) lock. Such a device does not meet the requirements for flight control (gust) locks as defined in 14 CFR 23.679, which states in part: “If there is a device to lock the control system on the ground or water, (a) There must be a means to (1) give unmistakable warning to the pilot when the lock is engaged...”
Warranty: None.
Labor: The following information is for planning
purposes only:
NOTE: No warranty coverage will be allowed for the inspection portion of this Service Bulletin.
Estimated man-hours: 0.5 hours Suggested number of technicians: 1
The above is an estimate based on experienced, properly equipped technicians complying with this Service Bulletin. Occasionally, after work has started, conditions may be found that could result in additional man­hours.
Issued: December 2016
Effectivity: King Air C90GTi, Serial Numbers LJ­1847,
LJ­1853 thru LJ­2128
NOTE: Textron Aviation­Owned Service Centers are the only facilities that can complete this service bulletin.
Compliance – Optional: This service bulletin can be accomplished at the discretion of the owner.
A service bulletin published by Textron Aviation may be recorded as “completed” in an aircraft log only when the following requirements are satisfied:
1) The installer must complete all of the instructions in the service bulletin, including the intent therein.
2) The installer must correctly use and install all applicable parts supplied with the kit drawings referenced in this service bulletin. Only with written authorization from Textron Aviation can substitute parts or rebuilt parts be used to replace new parts.
Service Bulletin 34-4149: Navigation – Introduction of Automatic Dependent Surveillance-Broadcast Out (ADB-B Out) Installation Kit
JANUARY 2017
3) The installer must use the technical data in the service bulletin only as approved and published.
4) The installer must apply the information in the service bulletin only to aircraft serial numbers identified in the Effectivity section of the bulletin.
5) The installer must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations.
No individual or corporate organization other than Textron Aviation is authorized to make or apply any changes to a Textron Aviation­issued service bulletin, service letter, or flight manual supplement without prior written consent from Textron Aviation.
Textron Aviation is not responsible for the quality of maintenance performed to comply with this document, unless the maintenance is accomplished at a Textron Aviation­Owned Service Center.
Reason: This service bulletin is being issued to comply with operational requirements for ADS­B Out.
Description: This service bulletin announces FAA­ approved Kits 90­3404 and 90­3405 that are available for installing ADS­B Out capable components that meet the operational requirements.
Warranty: No warranty coverage available.
KING AIR MAGAZINE • 31