NOTICE
Weight and balance or operating limitation changes shall be entered in the appropriate aircraft record. An alteration must be
compatible with all previous alterations to assure continued conformitv
with the aoo/icab/e airworthiness requirements. ·•
8. Description of Work Accomplished
(If more space is required, attach additional sheets. Identify with aircraft nationality and registration marl< and date work completed.)
BELL 412EP SIN 36106 N82628 PAGE 1
Installed 1 ea. GARMIN GPS 500 GPS Rec. system, using GARMIN Installation Manual 190-00181-02, Rev. D, April 2001
(GARMIN International STC SA00864WI), ret EA DWG#
AV5378: The GPS 500 system consists of the following equipment:
GPS 500, (TSO C129, CLASS A1), at Sta. 17.0 in the instrument panel in the BHT standard radar indicator position, using the
BHT provided standard 6 1/8" panel mounted avionics type mounting.
GA 56 GPS Antenna, (TSO C129
CLASS A1), at Sta. 56 on cockpit root
2 ea Eaton 582 Series Switches/Annunciators, (VLOC/GPS
& AUTO/OBS) at Sta. 23 on the Pilot's Instrument Panel
approximately 3 inches left of the Pilot's HSI.
-
2 ea Eaton 582 Series Annunciators, (MSG/WPT & TERM/APR) at Sta. 23 on the Pilot's Instrument Panel approximately 3
inches left of the Pilot's HSI.
1ea AIS 240-35 Relay Unit (PMA#
PQ787SN - for several fixed wing aircraft}; D0-160C) F.S. 1.5 in the avionics bay nose
compartment, using 80-005-2-8 Potted Inserts, and MS27039 screws
with AN960PD washers, referencing AERONAUTICAL
ACCESSORIES, INC. Report No. AA-95104, titled Structural Test for Inserts in Honeycomb, dated November 13, 1995.
____ t_ea_CILTech_pln_BO:ZD912BC1_relay_(Beechcraflp/n..50::38004&..1.)_at.E-S.~1.3~inJhe_avionics-bay_nose_compartment.adjacent. --~-----_ --
to the All Relay Kit above mounted to the existing shelf using "MS" haredare.
The Garmin GPS 500 System is interfaced to the installed BHT 412-706-024-101 FLIGHT DIRECTOR system reference BHT 412-
I\/IM-WIRING DIAGRAMS, REV. 4, 04 OCT 1996. The Garmin GPS 500 was installed in accordance with Edwards & Associates Inc.
DWG
# AV 5378, and the Garmin Installation manual listed above. The Garmin GPS 500 was also installed referencing AC 43.13-18
Chap. 3, sec. 2, Chap. 4, para. 4-53 thru
4-58, Chap. 6, sec. 1, & sec. 3, para. 6-29, & 6-30, Chap. 7, sec. 1 thru 7, Chap. 10, Chap.
11 Sec. 1 para. 11-1, 11-2; Sec. 3 para. 11-30, 11-31, 11-32,
& 11-37; Sec. 4, para. 11-47, thru 11-52; Sec. 5, thru 17, & Chap. 12,
Sec. 1, 2
& 3 and AC 43.13-2A Chapters 1, 2, & 3, and AC 20-138, para. 8a, 8a(2), 8b, 8b (1) (2) (3) (4) (5) (6) (8) (9) (10) (11 ), 8c (2)
(i) (iii) (iv), para. 9a, 9b, and Appendix 1 para 2, as a basis for a "Follow-On" installation using previously approved data for the same
equipment in a similar installation. The manufacturer's installation/operating instructions were provided. FAA Approved Rotorcraft
Flight Manual Supplement for the GARMIN GPS 500 GPS Navigation System was provided and must
be maintained with the
aircraft at all times. ALL EDWARDS
& ASSOCIATES drawings were developed from each piece of equipment's manufacturer's
installation instructions/schematics, and BHT's aircraft wiring schematics, and were provided to the aircraft's owner/operator.
An electrical load analysis has been computed and it has been determined that the electrical load does not exceed 80% of the rated
generator capacity. The aircraft was weighed and a new weight and balance computed. Revised aircraft's flight manual equipment
list. Provided Instructions for Continued Airworthiness (ICA), as part of this FAA FORM 337, as addressed by Flight Standards
Information Bulletin for Airworthiness FSAW 98-03, using the checklist in FAA Bulletin HBAW 98-18, see below. The ICA contained
in this FAA Form 337 is now part of the aircraft's inspection/maintenance requirements. Log book entry made. REF: W/0
C01226EA/1.
INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
1. INTRODUCTION: The Bell Model 412 is a FAR
PART 29 Cat. 8 certified helicopter. The above listed modification is for the
installation of an optional aviation GPS navigation system that has
be~n installed 1/A/W this field approved FAA FORM 337.
2._DESCRle.TION:_"(he_Ga(J'.Jlin_Ge_s.soo_Syg~rrLis.aJ~anel_ mounted.GeS_based_navigation systentwith.a_~atabase. ________ .- __ _
3. CONTROL, OPERATION INFORMATION: Reference FAA Approved Rotorcraft Flight Manual Supplement for the Garmin GPS
500 Navigation System.
4. SERVICING INFORMATION: N/A
5. MAINTENANCE INSTRUCTIONS: This modification shall be inspected at BHT Scheduled Inspections PART A or PART 8 as
applicable (ref: BHT-412-MM below). and Annually
1/A/W:
(a) The scope and detail contained in FAR 43 Appendix D, as applicable to the particular line item(s).
(b) BELL HELICOPTER TEXTRON BELL MAINTENANCE MANUAL, BHT-412-MM, Rev.4; (or later revision), Chap. 5 -
INSPECTIONS; ( NOTE: aircraft maintenance manuals are available to each aircraft owner from BELL HELICOPTER
TEXTRON).
.
(c) Manufacturer's publications, as referenced in section 8 of this FAA FORM 337; (NOTE: many manufacturer's publications
are proprietary to the manufacturer and it's approved facilities). Inspections, maintenance and/or repairs are limited to
persons authorized by FAR 43, paragraph 43.3, with the approved current publications, and training.
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