Identification of Hamilton Standard prop drawing no. 6601A-7.

[fraser]

I just obtained a Hamilton Standard prop (one blade) with the following info on the blade: Dwg No 6601A-7, Serial No N536389. Curious what model aircraft it might have be on and what time period it might have been in production. Any info appreciated.

 

[Leutnant]

If possible, could you post a picture? Maybe one of the number and one of the whole prop?

 

[fraser]

If possible, could you post a picture? Maybe one of the number and one of the whole prop?

Will post picture(s) in the morning (1/25/19). thanks.

 

[Leutnant]

Will post picture(s) in the morning (1/25/19). thanks.

Thank you! Will be much help for us so we can see the shape etc..

 

[fraser]

Thank you! Will be much help for us so we can see the shape etc..

Pictures of the subject prop blade are attached. There were two identical blades available I got one and a friend got the other, his serial number is N536389 (picture attached) my blade is serial number N536115. The picture of the blade is the one I got, and there is a picture of my serial number but very hard to read due to lighting. Hope this will assist in trying to determine what plane(s) might have used this prop and during what time frame they might have been manufactured. The blade is 5' 3+3/8" floor to tip and 10 3/4" wide at the widest point. Any help will be appreciated.

 

[Leutnant]

Honestly, I think it was put on a civilian plane, but at one time was on a military plane, as I have seen little amount of people painting the tips of their props on their fighter/bomber etc aircraft. My guess is a bomber for that one.

 

[FluxCapacitance]

Found the Type Certificate Data Sheet for it (here). It is eligible for use on the Ham Standard 23D40, 23D30, 23DX 3 bladed hubs.
Max takeoff limits are 600HP @ 1500 RPM, which seems heavy and slow moving. They were upgraded later with cold-worked shanks and shot-peened surfaces for longer fatigue life.

 

[Michael Hope]

It is possibly from a North American T-28, using the 33D50 or 43D-50 propellers with the Wright 1820. No T-28 Type Certificate, but props have TC P-749 and P-851.

 

[Zippythehog]

For additional information, the good folks at Hartzell may be able to help. I understand that they are the heirs to Hamilton Standard.

 

[fraser]

For additional information, the good folks at Hartzell may be able to help. I understand that they are the heirs to Hamilton Standard.

 

[fraser]

Thanks for all input. It appears that the blade was installed in a 43D50 propeller. Maybe a -601, -603, or -637 propeller.
T-28 or Grumman Albatross are possibilities, might be something else as well. Going to keep investigating. Any other ideas or info greatly appreciated.

 

[Michael Hope]

For additional information, the good folks at Hartzell may be able to help. I understand that they are the heirs to Hamilton Standard.

Hartzell Propeller only made Hamilton Standard 6101 blades back in mid to late 70's, as far as I know they have no connection to Hamilton Standard. No mention of a merger with Hamilton Standard on the Hartzell web site. I have had a working relationship with Hartzell for over 40 years, and I have not heard that.

Hamilton Standard name changed to Hamilton Sundstrand, then to UTC Aerospace, and currently part of Collins Aerospace.

 

[Zippythehog]

Yup. You're right. I guess they ended up with Rockwell-Collins.

 

[Luft Bier]

Thanks for all input. It appears that the blade was installed in a 43D50 propeller. Maybe a -601, -603, or -637 propeller.
T-28 or Grumman Albatross are possibilities, might be something else as well. Going to keep investigating. Any other ideas or info greatly appreciated.

43D50-601 and -603 are for the UF-1 of SA-16 Albatross aircraft. Additionally, later models had a #51 spline prop shaft P/N's 43D51-667 or -669. You can see the TCDS for those here:
http://rgl.faa.gov/Regulatory_and_G...d791358625805600706d18/$FILE/A22SO_Rev_10.pdf

Oddly, and I'm not sure why but Grumman is not the TC holder, someone else is.