On Sep 17, 5:10 pm, Andrew Gideon wrote:
I vaguely recall someone mentioning to me once that there was an AD
regarding cigarette lighters in Cessna 172s of some vintage. But I've
searched around trying to find this (including at the FAA web site), and
have failed.

Anyone have pointers (or is this perhaps an "urban myth")?

Thanks...

Andrew

Here is the AD number and list of applicable aircraft from 120 to
T210. I have found I had to perform the service bulletin referenced
in the AD on a CE 177RG even though the AD did not apply. A resistor
in the cigar lighter system was consistently burning up.

John Dupre'

79-08-03

CESSNA

Amendment: 39-3428

Applicability:

Applies to the following models and serial numbered airplanes
certified in all categories:



Model Series Serial Numbers

120, 140 8000 through 15075 and 15200
through 15724

150 15065062 through 15075564
A150 A15000001 through A15000480
170 18000 through 20999 and 25000
through 27169

172 28000 through 29999, 46001 through
47746, 17247747 through 17250572,

and 17259224 through 17267584

R172 R1722000 through R1722724
P172 P17257120 through P17257189
175 55001 through 56777 and 17556778
through 17557119

177 17700001 through 17702314
177RG 177RG0001 through 177RG0788
180 30000 through 32999, 50000 through
50355, and 18051608 through 18052770

182 33000 through 34999, 51001 through
51556, and 18254680 through 18265965

185 18500968 through 18503458
188 188-0001 through 188-0572 and
18800573 through 18803046

190, 195 7001 through 7999 and 16000
through 16183

210-5 (205) and 205-0320 through 205-0577
210-5A (205A)
206, U206, TU206, 206-0001 through 206-0275,
U206-0276 through U206-1444, U20601445 through

P206, TP206 U20604074, P206-001 through
P206-0603, and P20600604 through P20600647

207 20700001 through 20700414 (except
those aircraft with factory installed

24-volt electrical system)
210, T210 21058162 through 21061039 and
T210-0001 through T210-0454