AirComm Corporation Bell 407 Heating System Instructions for Continued Airworthiness OEM User Manual

HEATER SERVICE MANUAL 407H-200M-1 
Revision D    December 29, 2011  
 
 
 
 
 
 
AIR COMM CORPORATION  
3330 AIRPORT ROAD 
BOULDER, CO. 80301 
PHONE: 303-440-4075 FAX: 303-440-6355 
[email protected] 
 
 
 
INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 
BELL HELICOPTER 407 
CABIN HEATER SYSTEM 
 
 
 
 
 
 
 
  

HEATER SERVICE MANUAL 407H-200M-1 
Revision D    Page i 
 
Record of Revisions 
 
REVISION 
NUMBER ISSUE 
DATE DATE 
INSERTEDBY REVISION 
NUMBER ISSUE 
DATE DATE 
INSERTEDBY 
A 05/09/96 N/A  NS         
B 06/17/96 N/A  NS         
C 10/31/11 N/A  MS         
D 12/29/2011 N/A  RL         
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
 
 
  

HEATER SERVICE MANUAL 407H-200M-1 
Revision D    Page ii  
LIST OF REVISIONS 
 
Rev Description  Date 
A  Revised page I-1 407H-516 was -510, 407H-514 was -512  05/09/96
B  Revised pages 12 & 13 of service instructions to reflect revised Electrical 
installation 11/19/92
C  Re-formatted entire document to meet 8110.54A and added options for glass 
cockpit version of 407 (407GX) 10/28/11
D  Clarified parts nomenclatures to match up in various references.  Added Chin 
Bubble Defroster references.  Expanded...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D    Page iii  
TABLE OF CONTENTS 
 
Identification   Title         Page  
CHAPTER 0  INTRODUCTION  
1. Scope    0-1 
2. Purpose      0-1 
3. Arrangement     0-1 
4. Applicability     0-1 
5. Definitions     0-1  
6. Abbreviations    0-1 
7. Precautions     0-1 
8.  Units of Measure     0-2 
9.  Information Essential to the Continued        
  Airworthiness of the Cabin Heater System    0-2 
10. Reference Documents    0-2 
11. Distribution     0-2 
12. Changes...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D    Page iv 
 
TABLE OF CONTENTS (Continued) 
 
Identification   Title         Page  
 
CHAPTER 6  STANDARD PRACTICES  
1.  B-Nut/Fitting Safety Wire Procedure    6-1 
2.  Removal Replacement Cockpit Heater Ejector Assembly  6-2 
3.  Removal Replacement Cabin AFT Heater Ejector Assembly  6-4 
4.   Removal Replacement Heater Shutoff Valve    6-5 
5.   Removal Replacement Heater Control Valve    6-6 
6.  Removal Replacement Windshield Defroster Control Valve...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D                                                                                                                          Page 0-1 
 
Chapter 0 
INTRODUCTION  
1. SCOPE 
The scope of this manual encompasses the scheduled and unscheduled maintenance 
procedures for the continued airworthiness of the Air Comm Corporation cabin heater 
system installed in the Bell 407 series helicopter. 
2. PURPOSE  
The purpose of this manual is to provide the aircraft mechanic...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D                                                                                                                          Page 0-2  8.  UNITS OF MEASUREMENT 
All measurements contained within this manual are given in the United States standard 
measurement. 
9.  INFORMATION ESSENTIAL TO THE CONTINUED AIRWORTHINESS OF THE CABIN 
HEATER SYSTEM. 
This manual provides information which is required for operation and maintenance of the 
Air Comm air cabin heater...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D                                                                                                                          Page 0-3  heater ejectors are located on the sides of the rear aft-facing seats in the cabin.  The warm 
air in the cockpit is ducted forward through ejector outlets which are located in the forward 
seat box structure. The warm air for the cabin is exhausted through the heater ejectors 
located on each side of the aft-facing cabin seats....

HEATER SERVICE MANUAL 407H-200M-1 
Revision C                                                                                                                          Page 1-1   
Chapter 1 
AIRWORTHINESS LIMITATION SECTION 
 
The Airworthiness Limitations section is FAA approved and specifies maintenance required 
under paragraph 43.16 and 91.403 of the Federal Aviation Regulations unless an alternate 
program has been FAA approved. 
 
1. Airworthiness Limitations 
 
No airworthiness limitations...

HEATER SERVICE MANUAL 407H-200M-1 
Revision D                                                                                                              Page 2-1   
Chapter 2 
INSPECTIONS  
1. Inspection Requirements 
Item Annually 
Prior to Heating 
Season Special Inspection Information  Ref. 
Figure 
Heater Control 
Valve Assembly & 
Windshield 
Defroster Control 
Valves X  Check valve for ease of mechanical operation and 
security.  3.1, 3.6, 
3.7 
Engine Bleed Air 
Components 
(Plumbing) X  Check...