AD/Cessna 150/50 Rudder Limit Stops (Cth)
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Cessna 150, F150, 152 & F152 Series Aeroplanes
| AD/CESSNA 150/50 | Rudder Limit Stops | 7/2009 |
Applicability: | Cessna 150 and 152 aircraft models and serial numbers as identified below: Models Serial Numbers (1) 150F 15061533 through 15064532 (2) 150G 15064533 through 15064969 and 15064971 through 15067198 (3) 150H 15067199 through 15069308 and 649 (4) 150J 15069309 through 15071128 (5) 150K 15071129 through 15072003 (6) 150L 15072004 through 15075781 (7) 150M 15075782 through 15079405 (8) A150K A1500001 through A1500226 (9) A150L A1500227 through A1500432 and A1500434 through A1500523 (10) A150M A1500524 through A1500734 and 15064970 (11) F150F F150-0001 through F150-0067 (12) F150G F150-0068 through F150-0219 (13) F150H F150-0220 through F150-0389 (14) F150J F150-0390 through F150-0529 (15) F150K F15000530 through F15000658 (16) F150L F15000659 through F15001143 (17) F150M F15001144 through F15001428 (18) FA150K FA1500001 through FA1500081 |
| (19) FA150L FA1500082 through FA1500261 (20) FA150M FA1500262 through FA1500336 (21) 152 15279406 through 15286033 (22) A152 A1520735 through A1521049, A1500433, and 681 (23) F152 F15201429 through F15201980 (24) FA152 FA1520337 through FA1520425 | |
Requirement: | Accomplish either OPTION 1 or OPTION 2 of this Directive, unless already accomplished. OPTION 1: For all aircraft that do not have modification kits part number a. Insert the following text into the Limitations section of the FAA-approved airplane flight manual (AFM), and pilots operating handbook (POH): “INTENTIONAL SPINS AND OTHER ACROBATIC/AEROBATIC MANOEUVRES PROHIBITED PER AD/CESSNA 150/50. NOTE: THIS AD DOES NOT PROHIBIT PERFORMING INTENTIONAL STALLS.” b. Fabricate a placard (using at least 1/8-inch letters) with the following words and install the placard on the instrument panel within the pilot’s clear view: “INTENTIONAL SPINS AND OTHER ACROBATIC/AEROBATIC MANOEUVRES PROHIBITED PER AD/CESSNA 150/50.” c. The AFM and POH limitations in Requirement OPTION 1.a. of this Directive and the placard in Requirement OPTION 1.b. of this Directive may be removed after either Requirement OPTION 2.a. or Requirement OPTION 2.b. of this Directive is accomplished. OPTION 2: Install a rudder stop modification kit in accordance with Cessna Aircraft Company Service Bulletin SEB01-1, dated 22 January 2001; and, as applicable, a. For aircraft with a forged bulkhead: Replace the rudder stops, rudder stop bumpers, and attachment hardware with the new rudder stop modification kit part number SK152-25A; and, Replace safety wire with jamnuts. |
| b. For aircraft with a sheet metal bulkhead: Replace the rudder stops, rudder stop bumpers, and attachment hardware with the new rudder stop modification kit part number SK152-24A; and, Replace safety wire with jamnuts. Note: FAA AD 2009-10-09 Amdt 39-15904 refers. | |
Compliance: | OPTION 1: Within 100 hours time in service or 12 months after 2 July 2009, whichever occurs first. OPTION 2: Within 100 hours time in service or 12 months after 2 July 2009, whichever occurs first. |
| This Airworthiness Directive becomes effective on 2 July 2009. | |
Background: | The FAA requires certain actions which resulted from follow-on investigations of two accidents where the rudder was found in an over-travel position with the stop plate hooked over the stop bolt heads. While neither of the accident aircraft met type design, investigations revealed that aircraft in full conformity with type design can exceed the travel limits set by the rudder stops. The FAA has issued an AD to prevent the rudder from travelling past the normal travel limit. Operation in this non-certified configuration is unacceptable and could cause undesirable consequences, such as contact between the rudder and the elevator. |
David Villiers
Delegate of the Civil Aviation Safety Authority
22 May 2009
0
0
0