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Piper Performance Modifications

CLICK HERE for the Dorsal Fin Modification

CLICK HERE for the 3rd Fuselage Window Modification

Piper Cherokee with extended wingtips STC.

Extended Piper Cherokee wingtips, dorsal fin and stabilator extension STC approvals.

Two choices --

  • Use all Piper Cherokee parts

  • Use the Globe Fiberglass extended wingtips with Whelen Recognition Lights and Dorsal Fin.

Click here to order.

Technical Data:

STC SA1228CE approves the installation of aluminum wing extensions, new-style wingtips, stabilator extensions and dorsal fin on the following Piper airplanes (Arrow and Lance models are listed lower on this page):

PA-28-140, -150, -160 (all serial numbers)

PA-28-180 (serial numbers 28-1 through 28-7205318)

The modification extends the Piper Cherokee wing span from 30' to 32' 2.5", installs a new Hoerner style wingtip, extends the stabilator span from 10' to 12' 10.5" and installs the new style dorsal fin fairing to replace the old "Nixon nose" fairing. All components must be on the airplane (wing extensions, stabilator extensions and dorsal fin) to meet the FAA approval requirements for this STC.

The wing modification consists of removing the old round style wingtips and installing either of these two options:

  • Riveting on the Piper metal wing extensions, extending the navigation light wires and screwing on the new style wingtips, or,
  • Install the Globe Fiberglass extended wingtips with Whelen Recognition lights, extend the navigation light wires and run a new wire for the recognition lights.  This is generally the best option as parts are readily available and the addition of the lights in each wingtip improve taxi and landing lighting significantly over the single nose cap light.

The stabilator modification includes adding Piper Cherokee skins, ribs and spars. The stabilator parts MUST be purchased from your Piper Dealer, Distributor or other Piper parts source.  The stabilator tip is re-installed after the aluminum structure is riveted in place. A new stabilator balance tube may be required to properly balance the stabilator after the modification.

The dorsal fin fairing is the same two-piece fairing assembly approved by our other Piper STC's. (Link to Dorsal Fin Fairing here.)

The labor time to install this modification is approximately sixteen hours. This time does not include paint.

This modification adds beauty and makes the airplane appear much newer, more expensive and handle with improved flight characteristics.

Performance:

Before this modification the "fat wing" or "Hershey Bar" wing Cherokee has a tremendous sink rate in a reduced power situation. This installation results in a gentle sink rate by adding wing area, thereby reducing wing loading. The modification improves the climb rate and cruise speed. Stall speed is reduced. Another improvement results by reducing wingtip vortices, which cause disturbance of airflow over the aileron during slow speed flight. The result is an improved aileron response with improved "roll control power" making cross wind landings much easier.

Many pilots complain of "wing heaviness" on the short wing Cherokee when fuel is burned from one tank for more than 45 minutes. With the extended wings fuel can be used from one tank for an hour and fifteen minutes without any noticeable wing heaviness.

The long stabilator requires very little effort to flare on landing. The additional length makes it easy to hold the nose off the ground during a full stall landing, eliminating the problem of porpoising. The added stabilator area requires less trim during cruise, which results in less drag.

The added lift of the wing, new design wingtips, reduced drag of the stabilator and the vertical fin fairing all combine to give a faster cruise speed, increased control power, better rate-of-climb, extremely docile stall characteristics, greatly reduced sink rate and the appearance of a brand new airplane.

Click here for the Performance Comparison Chart.

Parts List for PA-28-140 through PA-28-180:

QTY

PART NUMBER NOMENCLATURE

SOURCE

USE ON

1

28000 STC & DRAWINGS

ISHAM INC.

KIT

1

78022-00 WINGTIP, LH

GLOBE

WING

1

78022-01 WINGTIP, RH

GLOBE

WING

1

99619-00 DORSAL FIN, AFT

GLOBE OR PIPER

FUSELAGE

1

99621-00 DORSAL FIN, FWD

GLOBE OR PIPER

FUSELAGE

2

NO P/N AFT DORSAL "L" BRACKET

GLOBE OR PIPER

FUSELAGE

1

NO P/N AFT DORSAL "A" BRACKET

GLOBE OR PIPER

FUSELAGE

2

68427-00 SPAR

PIPER

STABILATOR

2

68428-00 SPAR

PIPER

STABILATOR

1

68429-00 SKIN

PIPER

STABILATOR

2

68430-00 SKIN - RIBS IN (OPTION 1)

PIPER

STABILATOR

2

68430-01 SKIN - RIBS IN (OPTION 1)

PIPER

STABILATOR

1

63574-00 SKIN - RIBS OUT (OPTION 2)

PIPER

STABILATOR

1

63574-01 SKIN - RIBS OUT (OPTION 2)

PIPER

STABILATOR

2

68431-00 SKIN

PIPER

STABILATOR

2

68431.01 SKIN

PIPER

STABILATOR

2

63571-00 RIB

PIPER

STABILATOR

1

99803-00 BALANCE TUBE

PIPER

STABILATOR

14

A8-75 RIVNUT, DORSAL

LOCAL PUR

DORSAL

14

AN526-R8 SCREW, DORSAL

LOCAL PUR

DORSAL

ASMT

AD-4-4 RIVET

LOCAL PUR

DORSAL

4 FT

1/4" RUBBER "U" CHANNEL

LOCAL PUR

DORSAL

52

F5000-08 NUT, 8-32, FLOATING ANCHOR

LOCAL PUR

WINGTIP

104

AN426-4-3 RIVET

LOCAL PUR

WINGTIP

92

AN470-4-3 RIVET

LOCAL PUR

WINGTIP

18

AN470-3-2 RIVET

LOCAL PUR

WINGTIP

54

MS24693-S50 SCREW

LOCAL PUR

WINGTIP

54

A3135-017-24A WASHER, COUNTERSUNK

LOCAL PUR

WINGTIP

6

AN526-832-8 SCREW

LOCAL PUR

WINGTIP

2

AN362-832 NUT

LOCAL PUR

WINGTIP

7

34070 SPLICE, WIRE

LOCAL PUR

WINGTIP

4 FT

18 GAUGE WIRE

LOCAL PUR

WINGTIP

6

31890 TERMINAL, RING TONGUE

LOCAL PUR

WINGTIP

50 FT

16 GAUGE WIRE, RECO LIGHTS

LOCAL PUR

WINGTIP

1

NO P/N CIRCUIT BREAKER

LOCAL PUR OR PIPER

COCKPIT

 PA-28R-180 & PA-28R-200 Arrow

Technical Data:

STC SA2490SW approves the installation of aluminum wing extensions, new-style wingtips and the dorsal fin on the following Piper airplanes:

PA-28R-180 (all serial numbers)

PA-28R-200 (serial numbers 28R-35001 through 28R-7135329)

The wingtip modification uses the same parts as the fixed gear models above and extends the wing span from 30' to 32' 2.5", by installing new Hoerner style wingtips and the new style dorsal fin fairing to replace the old "Nixon nose" fairing. All components must be on the airplane (wing extensions and dorsal fin) to meet the FAA approval requirements for this STC.

The wing modification consists of removing the old round style wingtips, riveting on the Piper metal wing extensions and the new style wingtips or by installing the Globe Fiberglass wingtips with Whelen Recognition lights.

No stabilator modification is accomplished on the Arrow since it comes from the Piper factory with a longer stabilator than fixed gear models.

The dorsal fin fairing is the same two-piece fairing assembly approved by our other Piper STC's. ( Link to Dorsal Fin Fairing here).

The labor time to install this modification is approximately ten hours. This time does not include paint.

This modification adds beauty and makes the airplane appear much newer, more expensive and handle with improved flight characteristics.

PIPER LANCE (not available for aircraft with fuel tanks in the wingtips)

PA-32R-300 S/N 7680001 and on;

PA-32300 S/N 32-7940001 and on;

PA-32RT-300 S/N 32R-7885001 and on;

PA-32RT-300T S/N 32R-7787001 and on.

The wingtip modification uses the same Globe Fiberglass wingtips and reco lights as the fixed gear models above.  This approval installs new Hoerner style wingtips and the new style dorsal fin fairing to replace the old "Nixon nose" fairing. All components must be on the airplane (wing extensions and newer style dorsal fin) to meet the FAA approval requirements for this STC.  If you need replacement wingtips on your Lance this will be far less expensive than purchasing new Piper wingtips.  Performance improvement to cruise speed and climb are positive but very slight on the Lance models.

The wing modification consists of removing the old round style wingtips and installing the new style wingtips from Globe Fiberglass including with Whelen Recognition lights.

No stabilator modification is accomplished on the Lance since it comes from the Piper factory with a longer stabilator than other models.

The dorsal fin fairing is the same two-piece fairing assembly approved by our other Piper STC's to replace the "Nixon Nose" fairing.  The dorsal fin is not approved as a separate STC for the Lance and can only be installed when the new wingtips are installed. (Link to Dorsal Fin Fairing here).

The labor time to install this modification is approximately ten hours. This time does not include paint.

This modification adds beauty and makes the airplane appear much newer, more expensive and handle with improved flight characteristics. Additionally you will find these wingtips much less expensive than replacement Piper wingtips.

Isham Inc.