Well, let's not turn this into an OT flame war, so let me be succinct: no complex weapon system achieves 99-100% hit rates on the battlefield. Period. If you have after-action reports that say otherwise, please provide them, they would be very helpful. The best hit rate achieved in '91 was "about" 90%.
No, no, there's no flame war (at least from my part). This is only a civilized discussion about the hellfire (and it's effectiveness) which could result in an improvement of EECH (at least I like to think that way).
The reasons why weapon systems don't achieves 99-100% hit rates could vary a lot and for modern weapons which are extremelly precise weapons (such as the Hellfire or Paveway laser-guided bombs) the reason why they fail are mostly due to "external factors" which aren't directly related with the weapon itself, these factors could be due to "obscurants" (smoke, dust or fog), jamming (by enemy forces) or simply an occasional malfunction and most of these factor are really hard if not impossible to model within a simulator and IMO making a roll dice (% of fail) may or could not be the best way to model these factors (at least most of them).
Besides I'm pretty sure that the most usual factor for those kind of weapons (such as the Hellfire) to miss in combat is due to some mistake by the weapon operator's which in combat situations and due to stress factors are certainly a common reason for a failure, for example: imagine that a Hellfire was fired against an enemy target and during that time the helicopter is being targeted by enemy forces, in this case the pilot will certainly make an evasive manouver which will cause the laser hellfire to miss.
Again and regarding your post (and link posted by you) you are still forgetting the following:
-> The Hellfire used in Desert Storm (in which your report is based on) is the AGM-114A (the "A" model) which was the first model of the Hellfire.
-> The laser Hellfire used in EECH is the AGM-114K (the "K" model) which is a second generation Hellfire (the complete name is: AGM-114K HellfireII) which was developed and built in order to improve and correct the faults of the AGM-114A (most of them covered in your report). Anyway, if you can read here:
http://www.fas.org/man/dod-101/sys/missile/agm-114.htmThat the: "Hellfire II incorporates many improvements over the Interim Hellfire missile, including solving the laser obscurant/backscatter problem, the only shortcoming identified during Operation Desert Storm. Other improvements include electro-optical countermeasure hardening, improved target reacquisition capability"
In here you can see that the initial Hellfire variants (AGM-114A) could NOT reaquire its targets which is something that would make the missile miss in case the target would temporarily be obscured by some reason - again the HellfireII (AGM-114K) solves this.
-> Anyway, just as you even admited the AGM-114A (initial version of the Hellfire) had a precision/hit rate of 90% than imagine what would be the precision of the AGM-114K HellfireII (which is basically the Hellfire with it's "bugs" ironed out).
As for the "L" model, most crews in 2006 basically did not use it's RF features because they were found to be unreliable.
Again, I think you may be confusing things a bit and taking what you read "literally". The RF Hellfire (AGM-114L) was designed to be used against vehicles (tanks, IFVs/APCs, trucks, SPAAGs, etc...) and other kinds of "large and solid" targets (such as buildings) so and resuming: targets that can appear on a radar. These are NOT the kind of targets that you see in counter-insurgency conflicts such as Afghanistan and Iraq - Insurgents don't drive tanks or other kind of military vehicles - The only kind of target where the RF Hellfire could be used in Afghanistan or Iraq would be buildings but the Laser Hellfire is just as good or even better in hitting buildings. What I mean is that the AGM-114L RF Hellfire radar cannot detect infantry/insurgents (humans) or even small static weapons (such as Heavy machine guns or mortars) which is what insurgents use (in Afghanistan or Iraq) and this is the sole reason why the RF features (radar) of the AGM-114L is not used - it doesn't have anything to do with the radar's "reliability"!
Let's put our thinking caps on and suggest ways to do that. My suggestion is that we start with dud% & a crude stab at radar complexity. If you feel differently, that's perfectly fine! What do you suggest we do?
What I fell and suggest is that the precision Hellfire missile (both AGM-114L (radar) and AGM-114K (laser)) is good and realistic as it is now and there's no point (IMO) in changing and making the Hellfire a less precise weapon (IMO, this is making the Hellfire unrealistic).
Err, sorry for my long post...