Agricultural Aircraft
Agricultural Aircraft
Agricultural Aircraft
Fletcher FU24-950
Cessna A188 Agwagon modified by STC SA895SO
Piper PA-36-285 and PA-36-300 (three bladed propellers only) PA-36-375
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Commonwealth legislation
This directive requires owners/operators of the listed aircraft with three‑bladed Y‑shank aluminium hubs to inspect hubs (10× visual and, where specified, eddy‑current or dye‑penetrant per Hartzell SB 165E) and replace any cracked hub before further flight.
For specified agricultural and certain Piper/Aerostar types it also mandates replacing pre‑1983 hubs with post‑1983 hubs or applying an approved chamfer modification at overhaul. Operators pay for inspections, retrofits and parts; maintenance organisations must follow Hartzell SB 165E and may change overhaul and procurement decisions.
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Direct links to the current provisions in AD/PHZL/60 Amdt 4 - Three Bladed Y Shank Aluminium Hubs.
Fletcher FU24-950
Cessna A188 Agwagon modified by STC SA895SO
Piper PA-36-285 and PA-36-300 (three bladed propellers only) PA-36-375
Cessna 310 and 320 modified by Riley STC SA2082WE Gulfstream 700 (formerly Rockwell 700, Fuji FA-300-12) Helio H-700
Piper PA-23-250, PA-E23-250 (with TIO-540 only)
Piper PA-31 Navajo (with TIO-540 only)
Piper PA-31-325 Navajo C/R
Piper PA-31-350 Navajo “Chieftain” Piper PA-31P-350 Mohave
Piper T-1020 (same as PA-31-350) Piper A-32(R)-301T Turbo Saratoga
Aerostar PA-60-600, PA-60-601, PA-60-601P PA-60-602P, and PA-60-700P
Requirement: 1. Carry out a visual inspection of the hub using a 10X glass looking for signs of cracking or grease leakage. Replace any hub found cracked prior to further flight. Perform an eddy current or dye penetrant inspection in accordance with the procedures specified in Hartzell SB 165E on any of the above specified model and S/N propellers installed on any agricultural aircraft or Piper PA-31-325 Navajo C/R, Piper PA-31-350 Navajo “Chieftain”, Piper T-1020 (same as PA-31-350), PA-60-700P or Aerostar 700P aircraft.
2. For all other aircraft types listed in this Directive carry out a visual inspection of the hub using a 10X glass looking for signs of cracking or grease leakage. Replace any hub found cracked prior to further flight. Perform an eddy current or dye penetrant inspection IAW the procedures specified in Hartzell SB 165E.
3. For propellers installed on agricultural aircraft or Piper PA-31-325 Navajo C/R, Piper PA-31-350 Navajo “Chieftain”, Piper T-1020 (same as PA-31-350), PA-60- 700P or Aerostar 700P aircraft, replace pre 1983 style hubs with post 1983 hubs. If during overhaul, post 1983 style hubs are not available and the hub passes overhaul requirements then, the pre 1983 hub chamfer modification in accordance with Procedure 2 of Hartzell SB 165E may be incorporated. Hubs so modified are exempt from Requirements 1 and 2 of this Directive.
Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.
Fletcher FU24-950
Cessna A188 Agwagon modified by STC SA895SO
Piper PA-36-285 and PA-36-300 (three bladed propellers only) PA-36-375
Cessna 310 and 320 modified by Riley STC SA2082WE Gulfstream 700 (formerly Rockwell 700, Fuji FA-300-12) Helio H-700
Piper PA-23-250, PA-E23-250 (with TIO-540 only)
Piper PA-31 Navajo (with TIO-540 only)
Piper PA-31-325 Navajo C/R
Piper PA-31-350 Navajo “Chieftain” Piper PA-31P-350 Mohave
Piper T-1020 (same as PA-31-350) Piper A-32(R)-301T Turbo Saratoga
Aerostar PA-60-600, PA-60-601, PA-60-601P PA-60-602P, and PA-60-700P
Requirement: 1. Carry out a visual inspection of the hub using a 10X glass looking for signs of cracking or grease leakage. Replace any hub found cracked prior to further flight. Perform an eddy current or dye penetrant inspection in accordance with the procedures specified in Hartzell SB 165E on any of the above specified model and S/N propellers installed on any agricultural aircraft or Piper PA-31-325 Navajo C/R, Piper PA-31-350 Navajo “Chieftain”, Piper T-1020 (same as PA-31-350), PA-60-700P or Aerostar 700P aircraft.
2. For all other aircraft types listed in this Directive carry out a visual inspection of the hub using a 10X glass looking for signs of cracking or grease leakage. Replace any hub found cracked prior to further flight. Perform an eddy current or dye penetrant inspection IAW the procedures specified in Hartzell SB 165E.
3. For propellers installed on agricultural aircraft or Piper PA-31-325 Navajo C/R, Piper PA-31-350 Navajo “Chieftain”, Piper T-1020 (same as PA-31-350), PA-60- 700P or Aerostar 700P aircraft, replace pre 1983 style hubs with post 1983 hubs. If during overhaul, post 1983 style hubs are not available and the hub passes overhaul requirements then, the pre 1983 hub chamfer modification in accordance with Procedure 2 of Hartzell SB 165E may be incorporated. Hubs so modified are exempt from Requirements 1 and 2 of this Directive.