Piper PA-39 Twin Comanche C/R User manual

TWIN COMANCHE
PILOT’S OPERATING MANUAL
BY
_’
.,PIPER.
-- .---- .I_d.__._
/’
This manualis’ incompletewithout a current FAA4PPROoJEDAIRPLANEFLIGHTMAY’ i-~

Assurance that the airplane is in an airworthy condition is the
responsibility of the owner. The pilot in command is responsible for
determining that the airplane is safe for flight. The pilot is also responsible
for remaining within the operating limitations outlined by the Flight Manual,
instrument markings, and placards.
This Pilot’s Operating Manual is not designed, nor can any operating
manual serve,as a substitute for adequate and competent flight instruction,
or knowledge of the current airworthiness directives, the applicable federal
air regulations, and advisory circulars. It is not intended to be a guide of
basic flight instruction, nor a training manual for transition from single
engine flying to multi-engine flying.
If there is any inconsistency between the Airplane Flight Manual
approved by the FAA, and the additional information in this manual the
Airplane Flight Manual shall govern.
Additional copies of this manual, Part No. 761 453, may be
obtained from your Piper Dealer.
Published by
PUBLICATIONS DEPARTMENT
Piper Aircraft Corporation
761 453
Issued: June 1970

NOTE
PermanentPilot’s Operating Manual Revision Only
This Is Not A Complete Manual
This Pilot’s Operating Manual revision, PR730516, shall be
inserted into the current PA-39 Pilot’s Operating Manual,
761 453, issued June 1, 1970.

RJ3’ISiONS
The information compiled in this manual will be kept current by revisions distributed to
the airplane owners through their local dealers or distributors.
There are two types of revisions used to keep the Pilot’s Operating Manual current:
Temporary Revisions and Permanent Revisions. The material compiled in the revisions will
consist of information necessary to update the present information or add information to cover
added equipment.
I. Temporary Revision
This revision will be distributed at any time it is necessary to forward information to the
owners and operators of the airplane. The revision will usually consist of one or two pages
which may be inserted in the appropriate section of the manual. This revision will include
deletions and/or additions of material pertinent to different paragraphs of the manual.
II. Permanent Revision
This revision will be distributed periodically and will supersede all previous temporary
revisions. These revisions will be complete page replacement and shall be inserted in the manual
in accordance with the instructions given below.
1. Replace the obsolete pages with revised pages of the same page number. -
3
A. Insert pages with page numbers followed by a small letter in direct sequence with the
same common numbered page.
III. Identification of Revised Material
Revised text and illustrations shall be indicated by a black vertical line along the left hand
margin of the page, opposite revised, added or deleted material. A line opposite the page
number or section title and printing date, will indicate that the text or illustration was
unchanged but that material was relocated to a different page or that an entire page was added.
Symbols will indicate only current revisions with changes and additions to or deletions of
existing text and illustrations. Changes in capitalization, spelling, punctuation or the physical
location of the material on the page will not be identified by symbols.
.

Current Permanent and Temporary Revisionsto the PA-30 Pilot’s Operating Manual issued June
1970 are as follows:
761 453 (PR7 10317)
761 453 (PR710827)
Permanent Revision Dated March 17, 1971
Permanent Revision in F/M
Added propeller synchrophaser
11-10& added fuel pump revision
11-l1.
Dated August 27. 1971
761 453 (PR711115)
761 453 (PR720220)
761 453 (PR7203 17)
761 453 (PR720428)
761 453 (PR730330)
761 453(PR730516)
761 453(PR730632)
76.1-453(PR75032 1)
Permanent Revision
Permanent Revision
Permanent Revision
Misc. Revision to P/O/M;
Added nosewheel alternate to
Weight & Balance.
Misc. Revision to P/O/M,
F/M W/B.
Permanent Revision to F/M
(Rev. 10)
Permanent Revision to W/B
Permanent Revision to P/O/M,
added Rev. 11 to A F/M.
Dated Nov. 15, 1971
Dated Feb. 20, 1972
Dated March 17, 1972
Dated April 28, 1972
Dated March 30, 1973
Dated May 16, 1973
Dated June 22, 1973
Dated March 21, 1975

$
FAA APPROVED 1.
/
AIRPLANEFLIGHTMANUAL i
FOR I
4
PlPER”TWINCOMANCHEC/R”
NOTE
THIS MANUAL MUST BE KEPT IN THE AIRPLANE AT ALL TIMES
MANUFACTURER’SMODEL- PA-39
MANUFACTURER’SSERIAL-39. 25
REGISTRATION
- N w C%S-IPM
FAA APPROVED BY:
D. 0. A. No. EA-1
LOCK HAVEN, PENNSYLVANIA
DATE OF APPROVAL: NOVEMBER 28, 1969
APPROVAL BASIS: CAR 3 AND FAR PART 21, SUBPART J. - --
NORMALCATEGORYONLY ,.+- i
,,,’
/’

mI!‘i C%wcm C/R
-
TABLE OF CONTENTS
SECTION I
Log of Revisions
SECTION H
. . . . . . . . . . . . . . . . . . . , .. . . . . -. . . . Page
. . . . . . . . . . . . . . 1
Limitations . . . . . . . . . . . . . . . .
A. Engines ......._.. ::: :...*.:: :: :.‘...““““‘.......... 3
B. Fuel . . . . . *. --. . . . -‘- . . . . . . * . .c. Propellers .~;~~;........................~.............::: 3
. . ~
D. Cowl Flaps . . . . . : 1 1 1 . . . * . . . . . 3
- . . . * . * . *--.**-.**. * . * . . . . . . 3
E. Instrument Markings (Power Plant; . 1 1 * . . . . * . . * * * * - * . * . . . . * * . * * - . . . .
F. Airspeed Limitations and Indicator Markings (CaEbh;ed’Airspeed)’ * 1 1 1 : : 1 : 1 : : 1 1 1 3
G. Flight Load Factors . _
3
H. Maximum Weight . _ . : : : 1 1 : : 1 : : : : : 1 1 1 : : 1 1 : 1 : : : 1 : : : : 1 ’ - ’ . ’ . . ’
4
I. C. G. Range 4
,. Mane”“ers , : 1 1 : : : : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : : : : : : : : 5
K. Wing Flap Settings . . 1 . . . . 5
. . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . - . . .
L. UnusableFuel ..:;I: ....._.. :::::: . . . . . . . . . . . . . . . . . . . . . . . . 5
M. UsableFuel 5
.-- **- * - *. . . . . . * . . 1
-N. Placards . . II::;::: . . . . . . . . . . . . . . . . ..~ . . . . . . . . . . . . . . 1:::: 5
0. Instrument Markings . . . . . . . . . 5
. . . *. .. *‘- -*---*‘-** . . * . * * . . 5
P. LandingGearDownLigh;.::::::::::::::::::::::::::::::::‘..” 6”
. . . . .
SECTION III
Procedures . . . . . . . . . . . . . . . . .
A. Standard Procedures . . * . . * . . . * *----**.-* . . . - * -* *. *
1. StoppingEngines . . . . . . 7
2. Warning
.::::::::: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
. . * - . * * . . . . . . * . - *
3. Spins .::::: . . . . . .._................ ~...:::::::::::: 7
. . - . * . - . . 7
* *. . . . . *. * * * * * - - * * -
B. Systems Operation and Checks
. . . . . . : . . . . . 7
1. Voltage Regulating and Alternator System for’A&raft’skrial Numbers j9:1’ ’ . . ’ ’ .
thru 39-145 _ .
9
~*~~1*~~--* . . . . . . . . .
2. Alternator Paralleling System for Aircraft Serial Numbers 39-146 and up ’ : : 1 : : 1 1
3. Circuit Breakers . . . . . .’
9
4. FuelManagement 9
.;...:: . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. Manual Extension of: i&ding Gear . . . : : : : : : : : . ’ * ’ ’ * ’ ’ * * . . ’ . ’ * ’ . * lo
. . . . . . . . * - * * * * * *. * . 11
C. Emergency Procedures . .
1. Detecting a Dead Engine . 1 ; 1 : 1 : 1 1 : 1 : 1 . . . . . . - . . . . . . . . . . . . . . . . 13
2. Feathering Procedure . . . . . . . . . . . . . . . . . . . .
3. Unfeathering Procedure
. . 1 . . . . 13
. .
4. Engine Failure During Take-Off
. : 1 1 : 1 1 . . : : 1 : : 1 1 ’ ’ ’ . * * ’ ’ * . ’ . * ’ ’ . . ’ :3”
.-*--l-*m * - . * * * * . -
5* EngineFailureDuringaimb ..::::::::::‘.‘..-....‘.......... I4
6. Single Engine Landing . . * . . . . . **-***-*-- . . . 14
7. Single Engine Go-Around’ : 1 ; 1 : ; : 1 : ; 1 ; : 1 - * * * * * * * * * . . + - * . * - . . * l4
-**--.-.-- ----*--*** . 14
FAA APPROVED November 28, 1969
RElSSUED: June 1, 1970
REVISED: November 30,197l
REPORT: 1605 PART I P -- .-. -
MODE1 .+
/’

SECTION L’
Supplements .................
A. Oxygen System installation ....
1. Limitations ...........
2. Procedures ...........
3. Placards .............
4. Emergency ...........
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
.....................
19
..................... 21
..................... 21
..................... 21
..................... 21
..................... 21
B. Piper AutoControl III (Model AK161) Installation ....................... 23
1. Limitations ........................................... 23
’ Operating Instructions-. .................................... 23
3. Normal Operation ....................................... 23
4. Emergency Procedures .................................... 24
C. Brittain Industries, Inc. Model TT-5 Tip Tanks Installation .................. 25
1. Limitations ........................................... 25
’ Operating Procedures - Normal-. .............................. i 25
3. Performance .......................................... 26
4. Emergency ........................................... 26
D. Piper AltiMatic IILB Installation .................................. 27
1. Limitations ........................................... 27
1 Operating Instructions-. .................................... 27
3. Normal Flight Operation ................................... 28
4. With Glide Slope Coupler Installed (Flight) ........................ 28
5. Emergency Procedures .................................... 28
6. Placards ............................................. 29
E. Anti-Collision (Strobe) Light Installation ............................. 3 1
1. Operating Limitations ..................................... 3 1
F. Anti-Icing Equipment Installation ................................. 33
1. Placards ............................................. 33
2. Operating Instructions .................................... 33
G. Piper AltiMatic IIIB- 1 ........................................ 3 5
1. Limitations ........................................... 35
2. Procedures ........................................... 35
3. Performance .......................................... 40
FAA APPROVED November 28.1969
REISSUED: June 1.1970
REVISED: November 30,197 1

REVISIONS
The information compiled in this manual will be kept current by revisions distributed to
the airplane owners through their local dealersor distributors.
There are two types of revisions used to keep the Pilot’s Operating Manual current:
Temporary Revisions and Permanent Revisions. The material compiled in the revisions will
consist of information necessaryto update the presentinformation or add information to cover
addedequipment.
I. Temporary Revision
This revision will be distributed at any time it is necessaryto forward information to the
owners and operators of the airplane. The revision will usually consist of one or two pages
which may be inserted in the appropriate section of the manual. This revision will include
deletions and/or additions of material pertinent to different paragraphsof the manual.
II. Permanent Revision
This revision will be distributed periodically and will supersedeall previous temporary
revisions. These revisions will be complete pagereplacement and shall be inserted in the manual
in accordancewith the instructions given below.
1. Replacethe obsolete pageswith revised pagesof the same pagenumber.
2. Insert pageswith page numbers followed by a small letter in direct sequencewith the
samecommon numbered page.
III. Identification of RevisedMaterial
Revised text and iliustrations shall be indicated by a black vertical line along the left hand
margin of the page, opposite revised, added or deleted material. A line opposite the page
number or section title and printing date, will indicate that the text or illustration was
unchanged but that material was relocated to a different pageor that an entire pagewasadded.
Symbols will indicate only current revisions with changesand additions to or deletions of
existing text and illustrations. Changesin capitalization, spelling, punctuation or the physical
location of the material on the pagewill not be identified by symbols.
i ’
___--.-

REVISIONS ISSUED
Current Permanent and Temporary Revisions to the PA-39 Pilot’s Operating Manual issued June
1970 are as follows:
761 453 (PR710317)
761 453 (PR710827)
Permanent Revision Dated March 17, 1971
Permanent Revision in F/M
Added propeller synchrophaser
II-IO & added fuel pump revision
II-l 1.
Dated August 27, 1971
761 453 (PR7111 IS)
761 453 (PR720220)
761 453 (PR7203 17)
761 453 (PR720428)
761 453 (PR730330)
761 453 (PR730516)
761 453 (PR730622)
761 453 (PR750321)
761 453 (PR751226)
Permanent Revision
Permanent Revision
Permanent Revision
Misc. Revision to P/O/M;
Added nose wheel alternate to
Weight & Balance.
Misc. Revision to P/O/M,
F/M, W/B.
Permanent Revision to F/M
(Rev. 10)
Permanent Revision to W/B
Permanent Revision to P/O/M,
added Rev. 11 to A F/M.
Permanent Revision to P/O/M
Dated Nov. 15: 1971
Dated Feb. 20, 1972
Dated March 17, 1972
Dated April 28, 1972
Dated March 30, 1973
Dated May 16, 1973
Dated June 22, 1973
Dated March 2 1, 1975
Dated December 26, 1975