M20J Flap Speeds with graph

[epsalant]

I have a 1989 M20J and was always taught (and have confirmed in the POH) that Vfe is 115 KIAS, as indicated in the POH page 2-3.  But on page 5-7 of the POH there is a graph labeled "AIRSPEED CALIBRATION-PRIMARY STATIC SYSTEM-FLAPS/GEAR DOWN"  indicating that 15 degrees of flaps may be lowered safely at 128 kts!  This isn't mentioned anywhere else in the POH, and I've read the whole book !!!  I don't know if it is a mistake on the graph or an omission from the rest of the POH.  Any thoughts from experienced M20J drivers/mechanics ?

Thanks

 

Evan

[carusoam]

From the type certificate..... (posted by MJC on another thread)

http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/2fb25685d0303ab1852567ed004f59b8/$FILE/2A3.pdf

IX. Model M20J, 4 PCLM (Normal Category); Approved September 27, 1976

Engine Textron-Lycoming IO-360-A1B6D or IO-360-A3B6D or IO-360-A3B6. (Bendix fuel

injector, Model RSA 5AD1, P/N 2524054) See Note 12 and Note 20.

Fuel 100LL or 100/130 octane minimum grade aviation gasoline

Engine Limits For all operations, 2700 r.p.m. (200 hp)

Airspeed Limits Maneuvering 136 m.p.h. (118 knots) IAS

Never exceed 200 m.p.h. (174 knots) IAS

* 

 

 

****

 

 

 

 

Flaps extended (full flaps) 127 m.p.h. (110 knots) IAS

Landing gear retraction 110 m.p.h. ( 96 knots) IAS (15° flaps) 145 m.p.h. (126 knots) IAS

 

 Never exceed 225 m.p.h. (195 knots) IAS

 

 

This seems to be a slightly different answer than you posted.  Interesting source of information.  Check the original link for accuracy.  The cut and paste is not identical to the original.

Best regards,

-a-

[epsalant]

hmmm...that's certainly not what the 1989 M20J POH says.  But in any case, I'm just wondering if there is a higher flap speed limitation (as indicated in the POH graph that i posted) with 15 degrees of flaps.

Evan

[Royski]

I reckon the plane could handle higher speed flap actuation, but I imagine it is harder on the equipment.  Personally I aim for lower airspeed actuation of gear and flaps in my M20J.

[GeorgePerry]

I've always just used the top of the white arc on the A/S indicator.  The way the airspeed needle jumps around in most small GA planes, +/- 2 or 3 knots is about as accurate as you can hope to get. 

[fantom]

Quote: GeorgePerry

I've always just used the top of the white arc on the A/S indicator.