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Compliance Deadline by International
Civil Aviation Organization: 7 October 1999
The International Civil Aviation Organization (ICAO) has mandated the reduction of VHF communication channel spacing in Europe
from 25 kHz to 8.33 kHz for all aircraft operating above 20,000 feet.
Current
Type Number
|
Current
Part Number
|
Service
Bulletin
|
New
Type Number
|
New
Part Number
|
| VHF-21A |
622-6389-XXX
(All Status Endings)
|
SB #26 |
VHF-21C |
822-1111-001 |
| VHF-21B |
622-6390-XXX
(All Status Endings)
|
SB #26 |
VHF-21D |
822-1112-001 |
| VHF-22A |
622-6152-001/002/011/012 |
SB #26 |
VHF-22C |
822-1113-001 |
| VHF-22A |
622-6152-021/022/031/032 |
SB #26 |
VHF-22C |
822-1113-021 |
| VHF-22B |
622-6253-001/002 |
SB #26 |
VHF-22D |
822-1114-001 |
| VHF-22B |
622-6253-021/022 |
SB #26 |
VHF-22D |
822-1114-021 |
| VHF-422A |
622-7292-001/001/101/102 |
SB #17 |
VHF-422C |
822-1115-001 |
| VHF-422A |
622-7292-121/122 |
SB #17 |
VHF-422C |
822-1115-021 |
| VHF-422B |
622-7293-001/001/101/102 |
SB #17 |
VHF-422D |
822-1116-001 |
| VHF-422B |
622-7293-121/122 |
SB #17 |
VHF-422D |
822-1116-021 |
For additional information on this modification or mandates and mandate status please contact your customer service representative.
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