Textron Aviation Mandatory Service Letter MTL-27-05: Flight Controls – Elevator Bellcrank Inspection
Published date: Feb. 10, 2026
Effectivity: F90 S/Ns LA-2 thru LA-236; 200/B200 S/Ns BB-2 thru BB-2019; 200C/B200C S/Ns BL-1 thru BL-171; 200T/B200T S/Ns BT-1 thru BT-43; 200CT/B200CT SNs BN-1 thru BN-4; B200GT S/Ns BY-1 and on; B200CGT S/Ns BZ-1 and on; 300 S/Ns FF-1 thru FF-19; 300/300LW S/Ns FA-1 thru FA-230; B300 S/Ns FL-1 and on; B300C S/Ns FM-1 and on, FN-1
NOTE: Airplanes that have 30,000 flight hours or more will need to complete this service document and airplanes that have less the 30,000 flight hours will need to complete this service document upon reaching 30,000 flight hours.
Reason: It has been found that the elevator bob weight bellcrank has been cracking with airplanes close to or exceeding 30,000 flight hours. If the bellcrank is cracked this may cause a failure within the elevator flight control system.
NOTE: Airplanes with bob weights which have accumulated less than 30,000 flight hours must accomplish this service document upon reaching 30,000 flight hours.
Description: This service document provides parts and instructions to do a visual inspection on both sides of the elevator bellcrank for cracks and if cracks are found, replace the bellcrank as necessary.
Compliance – Mandatory: If the flight hours are less than 30,000 hours, comply upon reaching 30,000 hours. If the flight hours are greater than or equal to 30,000 hours, comply within 400 hours of receipt of this service letter.
Textron Aviation Mandatory Service Letter MTL-31-03: Indicating/Recording Systems
Published date: Oct. 30, 2025
Effectivity: B200GT S/Ns BY-432, BY-470 thru BY-472, BY-474 thru BY-477, BY-479, BY-481, BY-482
Reason: To remove the Cabin Accent Lights switch from the flight compartment overhead for aircraft with slick interior configuration installed.
Description: This service document provides instructions to remove the Cabin Accent Lights switch from the flight compartment overhead switch panel for the slick interior configuration.
Compliance – Mandatory: This service document must be accomplished within 200 flight hours or 12 months from the date of receipt, whichever occurs first.
The above information is abbreviated for space purposes. For the entire communications, go to txtavsupport.com.