December 1996

Volume 16, Number 12


Chapter 724, Experimental Aircraft Association

Merritt Island, Florida

Mailing address: P. O. Box 320923, Cocoa Beach, FL 32931


Officers Technical Counselors

President: John Murphy 783-1515 Ted Yon 783-7966

Vice President: Eric Kennard 631-3264 John Murphy 783-1515

Secretary/Treasurer: John Soukup 783-7128 Young Eagle Coordinator

Newsletter Editor: Fred Mahan 452-5797 Tony Yacono 459-0080



The next meeting will be the second Wednesday of October

Decemer 11, 1996, 7:30 P. M.



Big Merritt Island Air Service Hangar, South Side of Runway

Second Floor, Southwest Corner Meeting Room




EAA Chapter 724

P. O. Box 320923

Cocoa Beach, FL 32931



Calendar of Events and Places to Go

Dec 7-8 Lakeland, FL, EAA Antique/Classic Chapter 1 5th Annual Christmas Fly-In, 941-676-0659 or 813-737-3463.

Mar 9 Sebring, FL, South Florida Seaplane Fly-In, 813-382-0110.

Mar 14-16 Tico Airport, Valiant Air Commandís "Happy 50th Ė USAF", 407-268-1941.



Regularly Scheduled EAA Fly-Ins Across Florida

Every First Saturday, Cannon Creek Airpark, Lake City, Fly-In Breakfast, 904-755-4760

Every Second Saturday, Charlotte County Airport, Punta Gorda, 813-575-6360

Every Third Saturday, Sebring Airport, Chapter 803 pancake breakfast

Every First Sunday, Ft. Myers Airport, Chapter 66 pancake breakfast, 941-947-1430

Every Second Sunday,

Naples Airport, 941-775-1661

Dunn Airpark, barbecue lunch

Every Third Sunday, Kissimmee Municipal Airport, west side of the field, 9 am on.

Every Fourth Sunday, Bob Lee Airport, De Land, Fly-In Lunch, bring your own, 904-985-5373



Novemberís Chapter Meeting

The November meeting centered around discussion of the acident which killed chapter members Tom Hennessy and Art Lindberg. One or two members saw parts of the accident, but we heard from no definitive eyewitness. Much of the discussion at the meeting was speculation, and the investigation is still open.



US Aviator


Recently, Jim "Zoom" Campbell posted a long letter on the US Aviator Internet web site. "The reports of the demise of US Aviator would seem to be quite prmature," he says. Because of his outspokenness, he has made enemies in government and in industry. Harassment and the exodus of frightened staffers caused publication of US Aviator to be suspended.

Nevertheless, US Aviator is about to publish the second, 1000-page SportPlane Resource Guide. Jimís also working on the first 1997 issue of US Aviator. All of you who have subscriptions to US Aviator will have them prorated for any missing issues.

Working out of Winter Haven, Zoom is practically a neighbor. Many of us remember his stirring presentation as guest speaker at one of our annual banquets. Letís support him all we can. Keep your eye peeled for these US Aviator publications, which should hit the newsstands shortly.



Frequency Tolerance Rule

Shamelessly appropriated from the Chapter 635 "Windsocker"


"Itís Official

.003 PPM, Jan. 1, 1997"


As most of you know, the .003 ppm Frequency Tolerance Rule becomes effective on Jan. 1, 1997. There has been a great deal of confusion and mis-information regarding this rule. Following are answers to some of the most commonly asked questions. This comes to us from Bendix/King.


Q. Is my 360-channel Comm illegal after Jan. 1, 1997?

A. Technically, the answer is "yes." However, there are exceptions. The F.A.A. has "grandfathered" 360-channel radios under the following conditions:

  1. The unit can remain in service if it meets the .003 FTR.
  2. The unit can be used without meeting the .003 FTR until such time as it is removed for transmitter repair. Before the unit can be returned to service, it must meet the .003 ppm requirement. The exception goes further in stating that it is permissable to bring only one frequency (if that is the "broken" part of the radio) into tolerance. (Obviously, with most synthesized radios, repair of only one frequency is impractical).


Q. Which KX170ís will become illegal?

A. The KX 170, KX 170A and KX 175 (360-channel commís) DO NOT meet the requirement and will become "illegal" on Jan. 1, 1997. The KX 170B and KX 175B (both 720-channel commís) DO meet the requirements.


Q. Do I really need 760 channels?

A. NO, if you donít plan to enter Class B Airspace (was TCA) or fly IFR. You must have a comm capable of tuning a minimum of 720 channels for either. The F.A.A. has also assigned Unicom, low altitude ATC (below 18,000 ft. MSL) and ATIS frequencies to the 40 additional comm channels now available. In certain areas, you will be denied access to the airspace unless you can tune the assigned frequency.


Q. Can my KX 170A or KX 175 be made to meet the .003 FTR?

A. YES. Allied Signal (Bendix/King) and McCoy Avionics offer kits.


Q. What will it cost?

A. Allied Signal - $321.71 plus installation. MAC Corp. - $425 installed.


Q. Are the two kits the same?

A. NO. The Bendix/King (King PN 050-02932-000) simply brings the KX 170 or KX 175 into compliance. The MAC 170A kit brings them into compliance and gives the capability to tune 760 channels. To tune 760 channels, the MAC 1700 digital faceplate is required.


NOTE: The MAC faceplate mod wonít work with a Bendix/King Frequency Stability Kit.


MAC dealers can install the MAC 170A Frequency Stability Kit. You must order the kit and also the Installation Manual ($15). Anticipate 1Ĺ to 2 hours for installation. MAC 1700 faceplate installation time should remain the same.



Frank & Donna Caldeiro


Chapter member and new Astronaut Frank Caldeiro and his wife are the proud parents of a new baby girl, Ann Aurora. Mother and daughter are fine. Father is extremely busy learning to fly backseat in a T-38, IFR procedures, T-38 systems, etc. Frank says itís really too much work and things happen too fast for it to be fun. As the back seater heís responsible for communications, and Frank says that when youíre doing 300-400 knots, the need to talk to different controllers is constant. Frank flew into KSC with John Young on December 6. They only stayed briefly and he did not have time to visit Merritt Island Airport and hug his Long-EZ, which is still hangared there. He says there will be other times when he has more time. Meanwhile, congratulations to the new parents!



EGT/CHT Switches

from the AeroElectric Connection, June 1995


Q. I have an electronic EGT/CHT meter that presently monitors the hottest cylinder. Can I install more probes and use a switch to select any desired cylinder for monitoring?

A. Certainly. Just be sure that you use a two-pole, 4 or 6 position switch. Everything you do one side of a

thermocouple lead must be done exactly the same in the opposite lead. This is because your switch and connections create new thermocouples at every joint. By putting equal and opposing couples in adjacent wires, their undesirable effects cancel each other.



Newsletter by E-Mail


With this issue, the newsletter editor is starting to send the newsletter by E-mail, instead of U. S. Mail, to those who prefer receiving it electronically (the traditional back page of ads is missing this month from the E-mail version, but should be ready for the January issue). This saves the chapter money in stamps and reproduction costs, and saves time for the volunteers who fold and put labels on each copy. You will get your electronic copy before the paper copies can be distributed. If, after attempting to send your electronic copy, the newsletter editor receives notification that the E-mail failed, you will be sent a paper copy. Twenty copies of this newsletter were distributed electronically, saving the chapter $6.40, which over an entire year would be almost $77 in stamps alone. Anyone else preferring to receive the newsletter by E-mail, contact the newsletter editor at: