SpannerTwister,
What would happen if a small or otherwise controllable lithium-battery fire occurred and the pilot discharged the Halon extinguishing system on it?
This is transcribed from the Emergency Response Guidance for Aircraft Incidents Involving Dangerous Goods manual Red Book.
Lithium Ion Batteries UN3480 have an ICAO
Dangeroous Goods Emergency Response Drill code(issue 2013/2014) of
9 F Z
Meaning the following from the Table 4-1. Aircraft Emergency Response Drills
Drill No.
9
Inherent Risk-------- -------No general Inherent Risk
Risk to Aircraft- -------------As Indicated by drill code
Risk to Occupants- ----------As indicated by drill letter
Spill or leak procedure------ Use 100% oxygen; establish and maintain maximum ventilation if " A " drill letter
Fire Fighting Procedure------All agents according to availability- use water if available on " Z " drill letter; no water on "W" drill letter
Additional considerations----If " Z " drill letter consider landing immediately otherwise, none
ADDITIONAL RISKS:
DRILL LETTER : "
F "--FLAMMABLE
DRILL LETTER: "
Z "--- AIRCRAFT CARGO FIRE SUPPRESSION SYSTEM
MAY NOT EXTINGUISH OR CONTAIN THE FIRE; CONSIDER LANDING IMMEDIATLEY
So basically use everything you have on lithium ion batteries but containment is not guaranteed. Seems insane to put Lithium Ion batteries on any pax /cargo aircraft in any quantity really.