TC APPROVED BHT-206A/B-SERIES-MM-1
4-00-00
25 JUN 2019 Rev. 16 Page 13
Export Classification C, ECCN EAR99
Oil cooler impeller 206-061-432-011 will have been removed from service no later than 1 March 1978.
Refer to ASB 206-77-10 Rev. A, dated 21 February 1978.
Selected serial numbers of tail rotor yokes 206-011-819-101 must be removed from service. Refer to
ASB 206-88-41, dated 28 January 1988 for list of serial numbers affected.
Selected serial numbers of tension torsion straps 206-011-147-007 and 206-011-154-101/-105 must be
removed from service. Refer to ASB 206-89-46 Rev. A, dated 29 August 1989 for list of serial numbers
affected.
Selected serial numbers of main rotor blades 206-010-200-033 must be removed from service. Refer to
ASB 206-89-50 Rev. A, dated 29 November 1989 for list of serial numbers affected.
Selected serial numbers of tail rotor blades 206-016-201-113/-127 must be removed from service. Refer
to ASB 206-90-57, dated 27 June 1990 for list of serial numbers affected.
Selected serial numbers of tail rotor blades 206-016-201-125/-127 must be removed from service. Refer
to ASB 206-90-58 Rev. A, dated 31 October 1990 for list of serial numbers affected.
Refer to ASB 206A-12 Rev. A, dated 8 April 1970. Servo actuator 206-076-023 is equivalent to
Hydraulic Research part number 41103750 and servo actuator 206-076-024 is equivalent to Hydraulic
Research part number 41103650.
Refer to ASB 206A-14 Rev. A, dated 8 April 1970.
Cyclic control bellcrank support assembly 206-001-521-005/-006 will have been removed from service
no later than 15 July 1969. Refer to ASB 206A-11 Rev. B, dated 29 September 1969.
Masts 206-010-332-005/-009/-013/-017/-121 are not listed and are conditional. Selected serial numbers
of main rotor mast 206-010-332-121 will have been returned to Bell Helicopter Textron for metallurgical
evaluation no later than 31 May 1987. Affected masts inspected at BHT and found to be acceptable
have a suffix “U” added to the serial number. Refer to ASB 206-87-37, dated 23 April 1987 for list of
serial numbers affected.
Selected serial numbers of sun gear 206-040-662-101 will have been removed from service no later
than 15 January 1991. Refer to ASB 206-90-56 Rev. A, dated 15 January 1991 for list of serial numbers
affected.
Fixed float landing gear crosstubes 206-050-169-001/-003 must be removed from service. Refer to
ASB 206-94-81 Rev. A, dated 17 August 1994.
Emergency flotation landing gear crosstubes 206-050-134-001/-003/-005/-007/-011/-103/-105 must be
removed from service. Refer to ASB 206-94-82 Rev. A, dated 17 April 1995.
Emergency lightweight flotation landing gear crosstubes 206-050-107-025/-027/-119/-121 must be
removed from service. Refer to ASB 206-94-83, dated 6 September 1994.
Fixed float landing gear crosstubes 206-050-157-001/-003 must be removed from service. Refer to
ASB 206-96-88, dated 3 June 1996.
Table 4-1. Airworthiness Limitations Schedule (Cont)
NOTES (CONT):