ED Decision 2016/009/R
RESCUE AND FIREFIGHTING LEVEL OF PROTECTION
The following examples are intended to illustrate the way in which the various factors to be taken into account when calculating levels of protection should be applied:
Example 1 — Wider aeroplane fuselage
If an aeroplane has a fuselage length of 47.5 m, column 2 of Table 1 in AMC2 ADR.OPS.B.010(a)(2) indicates RFF category 7. However, the example aeroplane has a fuselage width of 5.5 m, therefore, according to (a)(2) in AMC2 ADR.OPS.B.010(a)(2), the appropriate level of protection is RFF category 8.
Example 2 — Longer than average aeroplane length
Where operations by aeroplanes larger than the average size in a given category are planned, the quantities of water should be recalculated, and the amount of water for foam production as well as the discharge rates for foam solution should be increased accordingly. The example below is based on an aeroplane with an overall length of 48 m and a maximum fuselage width of 5 m. The quantity of water and the discharge rate of foam solution have been calculated using the ICAO critical-area concept, and increased to reflect the greater practical critical area.
Minimum useable amounts of extinguishing agents (based on the provision of foam meeting performance level B) |
|||
Aerodrome category |
Water (lt) |
Discharge rate of foam solution (lt/min) |
Dry chemical powder(kg) |
Category 7 minimum requirement |
12 100 |
5 300 |
225 |
Requirement following recalculation |
14 113 |
6 163 |
225 |
Example 3 — Less than 700 movements in the busiest consecutive 3 months
The following examples illustrate the method for the determination of the aerodrome’s rescue and firefighting level of protection when considering the number of movements:
Aeroplane |
Overall length |
Fuselage width |
Category |
Movements |
Airbus A320 |
37.6 m |
4.0 m |
6 |
600 |
Bombardier CRJ 900 |
36.4 m |
2.7 m |
6 |
300 |
Embraer 190 |
36.2 m |
3.0 m |
6 |
500 |
ATR 72 |
27.2 m |
2.8 m |
5 |
200 |
The longest aeroplanes are categorised by evaluating, based on Table 1 of AMC2 ADR.OPS.B.010(a)(2), firstly their overall length and secondly their fuselage width until 700 movements are reached. It may be seen that the number of movements of the longest aeroplanes in the highest category totals more than 700. The aerodrome, in this case, is category 6.
Aeroplane |
Overall length |
Fuselage width |
Category |
Movements |
Airbus A350-900 |
66.8 m |
6.0 m |
9 |
300 |
Boeing 747-8 |
76.3 m |
6.5 m |
10 |
400 |
Airbus A380 |
72.7 m |
7.1 m |
10 |
400 |
The longest aeroplanes are categorised by evaluating, based on Table 1 of AMC2 ADR.OPS.B.010(a)(2), firstly their overall length and secondly their fuselage width until 700 movements are reached. It may be seen that the number of movements of the longest aeroplanes in the highest category totals more than 700. It may also be noted that when evaluating the category appropriate to the overall length of Airbus A380, e.g. category 9, the category selected is actually one level higher as the aeroplane’s fuselage width is greater than the maximum fuselage width for category 9. The aerodrome, in this case, is category 10.
Aeroplane |
Overall length |
Fuselage width |
Category |
Movements |
Boeing 737-900ER |
42.1 m |
3.8 m |
7 |
300 |
Bombardier CRJ 900 |
36.4 m |
2.7 m |
6 |
500 |
Airbus A319 |
33.8 m |
4.0 m |
6 |
300 |
The longest aeroplanes are categorised by evaluating, based on Table 1 of AMC2 ADR.OPS.B.010(a)(2), firstly their overall length and secondly their fuselage width until 700 movements are reached. It may be seen that the number of movements of the longest aeroplanes in the highest category totals only 300. The minimum category for the aerodrome, in this case, is be category 6, which is one category level below that of the longest aeroplane.
Aeroplane |
Overall length |
Fuselage width |
Category |
Movements |
Airbus A380 |
73.0 m |
7.1 m |
10 |
300 |
Boeing 747-8 |
76.3 m |
6.5 m |
10 |
200 |
Boeing 747-400 |
70.7 m |
6.5 m |
9 |
300 |
The longest aeroplanes are categorised by evaluating, based on Table 1 of AMC2 ADR.OPS.B.010(a)(2), firstly their overall length and secondly their fuselage width until 700 movements are reached. It may be seen that the number of movements of the longest aeroplanes in the highest category totals only 500. It may also be noted that when evaluating the category appropriate to the overall length of Airbus A380, e.g. category 9, the category selected is actually one level higher as the aeroplane’s fuselage width is greater than the maximum fuselage width for category 9. The minimum category for the aerodrome, in this case, is category 9, which is one category level below that of the longest aeroplane.
Aeroplane |
Overall length |
Fuselage width |
Category |
Movements |
Airbus A321 |
44.5 m |
4.0 m |
7 |
100 |
Boeing 737-900ER |
42.1 m |
3.8 m |
7 |
300 |
ATR 42 |
22.7 m |
2.9 m |
4 |
500 |
The longest aeroplanes are categorised by evaluating, based on Table 1 of AMC2 ADR.OPS.B.010(a)(2), firstly their overall length and secondly their fuselage width until 700 movements are reached. It may be seen that the number of movements of the longest aeroplanes in the highest category totals only 400. The minimum category for the aerodrome is category 6. However, even if there is a relatively wide range of difference between the length of the longest aeroplane (Airbus A321) and the aeroplane for which the 700th movement is reached (ATR 42), the minimum category for the aerodrome may only be downgraded to category 6.
Example 4 — Anticipated periods of reduced activity
The level of protection should be no less than that needed for the highest category of aeroplanes planned to use the aerodrome during that period. If the aerodrome has promulgated RFFS category 7, but between 23:00 and 6:00, the largest aeroplane operating has an overall length of 27.5 m and a maximum fuselage width of 3.9 m, the promulgated category may be downgraded to category 5 for that time frame.
Example 5 — All-cargo and mail aeroplane operations including dangerous goods
An all-cargo aeroplane is an aeroplane operated for the transportation of cargo including dangerous goods. If an all-cargo aeroplane has an overall length of 47.5 m and a maximum fuselage width of 4.2 m, according to Table 1, category 7 is indicated. As the aeroplane is an all-cargo one, according to Table 2, a reclassification to category 6 may be applied.
Guidance on calculating RFF categories for aeroplanes, including adjustments for wider fuselages, longer lengths, reduced movements, and all-cargo operations, with worked examples.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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