Order Code RS20522
Updated October 17, 2000
CRS Report for Congress
Received through the CRS Web
Army Aviation: The RAH-66 Comanche
Helicopter Issue
Christopher Bolkcom
Analyst in National Defense
Foreign Affairs, Defense, and Trade Division
Summary
Although it has been a high priority Army program, a number of factors have
complicated the RAH-66 Comanche program. Since its inception, the program has been
restructured several times–postponing the initial operational capability (IOC) and
increasing overall program costs. Presently, there is debate within the Army regarding
whether the program should be reduced significantly to make funds available to pursue
other modernization priorities. This report will be updated as developments warrant.
Background1
The RAH-66 Comanche is a next generation armed reconnaissance helicopter. It is
the first helicopter designed and developed specifically for this mission. The Comanche is
being designed to stealthily penetrate enemy airspace and conduct reconnaissance
throughout the extended battlespace. It is to incorporate advanced computers and
communications to play a leading role in the digital battlespace, and enough weaponry to
engage a wide range of targets.
As part of heavy division/corps attack helicopter battalions, the Comanche’s primary
roles would be to seek out enemy forces and designate targets for the AH-64 Apache
attack helicopter at night, in adverse weather, and in battlefields obscured by smoke and
dust. In air cavalry troops and light division attack helicopter battalions, the RAH-66
would replace the Army’s current fleet of AH-1 Cobra light attack helicopters and OH-58
Kiowa Warrior helicopters performing the attack mission as well as reconnaissance.
Originally, the Army envisioned developing and procuring 5,023 Comanches to
replace the Army’s 1960s-era observation, utility transport, and attack helicopters (OH-6,
OH-58, UH-1, AH-1). Budget constraints and force structure modifications caused
1 For additional, information on the Comanche see CRS Report 96-525F, Army Aviation: RAH-66
Comanche, by Steven R. Bowman. Washington, 1996 (Archived), and the Army’s Comanche web
site [http://155.147.98.10/tsmc/tsmc.htm].
Congressional Research Service ˜ The Library of Congress

---

CRS-2
significant modifications to the Comanche program. First, the utility transport version of
the platform was canceled and the procurement objective reduced to 1,292 armed
reconnaissance helicopters. Second, the FY1993 budget deferred a production decision
until 2006 and trimmed the number of prototypes from six to three. Third, in December
1994 DoD trimmed $2 billion from the RAH-66 program and dropped another prototype,
going from three to two. Finally, in 1995, the Army restructured the program to add 6
“experimental operational capability” helicopters within the reduced budget limits, in part
by producing them without the armaments suite.
In April 2000 the Comanche program successfully completed a series of tests and was
cleared to begin its two year, $3.1 billion Engineering and Manufacturing Development
phase2. Five pre-production aircraft will be built for this phase and eight production
aircraft are due for delivery by 2004 for initial operational testing and evaluation. A total
of 14 initial operational capability RAH-66s will be delivered at the end of 2006.3 Current
plans call for Boeing Sikorsky to produce a total of 1,213 Comanches through 2024.
The Debate over Mission and Capabilities
The RAH-66 Comanche is designed to replace the aging AH-1 and OH-58D
helicopters and to augment the AH-64 Apache attack helicopter. Critics of the Comanche
program argue that there is no need for a highly sophisticated, very low observable armed
reconnaissance helicopter in today’s threat environment. They contend that Comanche’s
capabilities and mission requirements were developed in response to a Cold War threat
environment that no longer exists. Furthermore, the Apache and Kiowa helicopters
performed very well as a hunter-killer team during Operation Desert Storm (1991). Critics
also argue that the Comanche’s role and capabilities are too similar to the Apache’s to
justify the costs of the helicopter’s development and production. They would cancel the
RAH-66, and use the savings to upgrade the OH-58 aircraft and the AH-64D Apache’s
Longbow4 target acquisition capabilities.
Proponents of the RAH-66 agree that the Cold War threat has disappeared, but
counter that today’s low-intensity regional conflicts (such as Kosovo and Somalia) place
even greater burdens on Army aviation. U.S. Forces must be more deployable, less reliant
on forward bases, and more versatile than they were during the Cold War. Supporters
argue that Comanche satisfies all three criteria. Furthermore, proponents argue that
Comanche is an unparalleled force multiplier. It makes the whole force more effective and
will reduce the Army’s maintenance burden. This perspective, proponents argue, is
supported by initial results from a recent Army “Analysis of Alternatives.” This study
compared attack and air cavalry squadrons equipped with AH-64D Longbows and OH-
58D Kiowa Warriors to units composed of Apaches and Comanches.
2 Comanche Cleared to Begin Engineering and Manufacturing Development. Defense Daily. April
6, 2000: 5.
3 Telephone conversation with Jack Satterfield, Boeing spokesman; Capaccio, Tony, U.S. Army
To Make Decision on Helicopter Purchases in April, Bloomberg News Service, March 2, 2000.
4 The AH-64D Longbow is an upgraded version of the AH-64A which includes a millimeter-wave
Fire Control Radar target acquisition system and fire-and-forget Hellfire missiles.

---

CRS-3
The force equipped with Comanches reportedly demonstrated better situational
awareness, survivability and lethality than the other force. The study suggested that the
most significant gains were achieved when the Comanche replaced the OH-58D. The
Comanche provided better sensing, lethality, range, agility, survivability, and versatility
than the Kiowa units. Comanche also improved the effectiveness of the Longbow when
the two aircraft were mixed in attack units. The RAH-66's stealth improved Apache
Longbow’s survivability when cooperative tactics, techniques and procedures were used.5
Claims of reduced maintenance burdens for the Comanche, however, are more
controversial than are claims of its effectiveness6. Projected ratios of maintenance man-
hours to flight hours have varied over time. The Army hopes to achieve a ratio of 2.6
hours of maintenance to every one hour of flight; however, both the General Accounting
Office and Congressional Budget Office assert that projected reductions in maintenance
are always optimistic.7 Additionally, some studies conclude that the Comanche is more
expensive to fly than the Kiowa Warrior ($2,042/hour vs $1,598/hour), but less expensive
than the AH-64D, which can cost as much as $3,622/hour to fly.8
Congressional Action
Congress strongly supported the Comanche program by consistently meeting or
exceeding DoD’s budget requests for funding. In its report on DoD’s FY1996 budget
request, the House Armed Services Committee reproached both the Army and the DoD
for tepid commitment to the program, urging that it be given a higher funding priority and
that full-scale production by 2004 be guaranteed.9
Table 1. Summary of Recent Comanche R&D Funding
(in Millions $)
DoD
Authorization
House
Senate
Appropriation
Year
Request
Conference
Appropriation
Appropriation
Conference
FY2001
614.0
614.0
614.0
614.0
614.0
FY2000
427.1
483.1
427.1
483.1
467.1
FY1999
367.8
391.0
391.8
349.2
367.8
FY1998
282.0
282.0
282.0
282.0
282.0
5 Winograd, Erin Q. Initial Results of Alternatives Analysis Show RAH-66 Contributions. Inside
the Army. January 24, 2000.
6 Claims of improved maintenance requirements are based on projections of advanced processes
and technologies which won’t be proven until the aircraft is fielded. In general, more
technologically sophisticated weapon systems are more difficult to maintain than less sophisticated
weapon systems.
7 CRS Report 96-525, Army Aviation: RAH-66 Comanche, by Steven R. Bowman. Washington,
1996: 3-4.
8 Winograd, Erin Q. Initial Results of Alternatives Analysis Show RAH-66 Contributions. Inside
the Army. January 24, 2000.
9 U.S. Congress. House of Representatives. Committee on National Security, National Defense
Authorization Act for Fiscal Year 1996, 104th Cong., 1st Sess., H.Rept. 104-131, June 1, 1995: 91-
92.

---

CRS-4
Recent Developments
As part of its modernization plans, the Army has proposed two reorganization
initiatives that could directly and indirectly affect the Comanche program. The first
initiative is Army Chief of Staff Gen. Eric Shinseki’s plan to transform the Army from an
essentially Cold War force designed to win a land war in Europe to one containing lean
brigades able to respond to a variety of contingencies in a matter of days, not weeks.10 The
Army would achieve this transformation in eight to ten years by evolving from today’s
“legacy force” of heavy armor divisions and light infantry divisions, to a lighter “objective
force.” Two “interim” brigades will reportedly be established each year at a cost of $3
billion to bridge the gap between the “legacy” and “objective” forces.11
The crux of this “once in a generation” transformation in terms of Comanche
development is that the Army cannot afford such modernization within its current and
projected budget authority and thus may be forced to cut programs like Comanche to free
up money. Recent correspondence from Congress to Defense Secretary William Cohen
warns DoD that although Congress supports the Army’s modernization program,
additional money is not likely to be made available, and thus the Army will have to pay for
its transformation without a significant increase in the budget. This lack of funds leaves the
Army with two options: 1) fund its transformation by cutting readiness and/or quality of
life, or 2) reduce procurement programs. And, as Secretary of the Army Louis Caldera
asserts, the Army will not fund this transformation “on the backs of our soldiers.”12 With
a total program acquisition cost of $48 billion the Comanche program may well be a
candidate for cuts.
Consistent with its overall transformation plan, the Army is also studying a redesign
of its Aviation force structure. The intent of this Training and Doctrine Command study
is to make the Army’s aviation forces easier to deploy and more flexible, so they can
better support the small-scale contingency operations and military operations other than
war which the Army anticipates will be its most frequent missions. The study is a work in
progress, but a leading concept, referred to as the “Way Ahead,” is noteworthy for its
potential consequences for the Comanche program.
The primary recommendation of the “Way Ahead” is to meld today’s 24-aircraft lift
helicopter and scout/attack helicopter battalions into 30-aircraft battalions composed of
both lift and scout/attack helicopters (10 Apache Longbows, 10 Comanches and 10 UH-60
Blackhawks). The Army would need only 40 of these composite battalions, versus today’s
51. The Way Ahead would also phase out legacy helicopters more quickly than previously
planned. Under this approach, the Army would field only 625 Comanches by the year 2018
– approximately a 50% reduction in the currently planned buy of RAH-66s.13
10 Scarborough, Rowan. Copter Cutbacks Get Army Support. Washington Times, February 28,
2000: 1.
11 Gourley, Scott. US Army Chief details support for “legacy force.” Jane’s Defense Weekly,
February 23, 2000:8.
12 Jaffe, Greg. Spending Limitations May Lead Army To Scale Back Helicopter Purchases. Wall
Street Journal. March 2, 2000.
13 Winograd, Erin Q. TRADOC Proposes Overhaul of Army’s Aviation Force Structure. Inside
(continued...)

---

CRS-5
The Army Aviation Master Plan, published in April 2000, recommends a
reorganization of the Army’s force structure, but does not specifically mention how many
Comanches it would eventually purchase.14
Potential Issues for Congress
In light of the facts and arguments presented above, an overarching question for
Congress is: “Is reducing the Comanche program an appropriate method of freeing up
funds to finance the Army’s plan to build lightweight armored vehicles and form new units
of more mobile troops?” Many analysts suggest that maintaining the funding required to
purchase 1,213 RAH-66s over the program’s 20 year production cycle (beginning in 2006)
will be difficult. Thus, while the Army remains committed to the full purchase of
Comanche today, it will continue to face pressure to reduce the program in coming years.
Congress may wish to pursue the following lines of inquiry:
! Comanche is the Army’s only major aviation development program. The
Comanche Operational Requirements Document describes the RAH-66's
contribution to future Army warfighting missions. It states that “Aviation
capabilities add increased deployability, versatility, lethality, flexibility,
mobility, extended coverage and sustainment to Maneuver, Fire Support,
Air Defense...”and other mission areas. Also, “Current systems are
tactically and technically incapable of performing armed reconnaissance,
attack and air combat...”in the modern threat environment. If the
Comanche buy is halved, what effect will this have on long-term
capabilities? How much does Comanche contribute to combat power vis-
a-vis the light armored vehicles that the also Army wants?
! $4.5 billion has been spent on the Comanche to date.15 Will a purchase of
600 helicopters (for a yet to be estimated sum, but possibly near $30
billion) be a sufficient return on this R&D investment?
! The Air Force’s best tank killer, the A-10 Warthog is a 25-year-old
aircraft. The Army recently reduced the purchase of Longbow Apaches
from 748 to 530 aircraft, and the “Way Ahead” modernization strategy
would reduce the Longbow inventory to 375 by the year 2018. If the
Army cuts the Comanche buy, will the U.S. military have the stopping
power it needs in future contingencies?
! The need for Comanche has been challenged on the basis that its
capabilities do not differentiate it sufficiently from Apache to merit its
development. However, turning this argument around, some would assert
that the Comanche is well-suited to be the Apache’s replacement as the
13 (...continued)
the Army. December 6, 1999.
14 Winograd. Erin Q. New Aviation Plan Calls for Just Four Types of Aircraft, More AH-64Ds.
Inside the Army. April 3, 2000
15 Selected Acquisition Report (SAR) Summary Tables. (As of September 30, 1999)Department
of Defense, OUSD(A&T), Systems Acquisition, November 10, 1999:11.

---

CRS-6
Army’s premier attack helicopter and the Army’s best platform for future
growth and development in this area. Subsequently, one could anticipate
a helicopter force structure composed solely of heavy lift (CH-47),
battlefield utility (UH-60), and scout/attack (RAH-66) aircraft.
! Consideration of export issues is part and parcel of any military program.
How much might Comanche exports contribute to sustaining the aviation
industrial base and balancing U.S. trade? As a new platform, and one less
overtly designed for attack than the Apache, might the Comanche be
offered for export to a larger number of countries than the AH-64?
Conversely, due to its low observable features might Comanche exports
need to be limited to our closest allies?
Table 2. Comparative Helicopter Characteristics
RAH-66
AH-64D
AH-1F Cobra
OH-58D
Comanche
Longbow
Kiowa Warrior
Apache
Upgrade
Upgrade
Unit Program
$37.75
$10.23
$11.5
$8.5
Cost (FY01 $m)
(Then year $,
assumes 1,213
unit buy )
Initial
2006
1984 (A Model)
1967 (G Model)
1969 (OH-58)
Operating
Capability
Max Range
1200 nmi
1024 nmi
441 nmi
250 nmi
Max Speed
175 kts
141 kts
137 kts
112 kts
Armament
20mm gun; 4
16 Hellfire
1 M197 three
4 Hellfire or
Hellfire and 2
missiles or 76
barrel 20 mm
Stinger missiles,
Stinger Missiles
Hydra rockets,
gun 4 TOW
or 14 Hydra
(more w/pylons,
30mm cannon
missiles, 8
rockets, or 1 7.62
but w/less stealth)
Hellfire, or 1
mm/1.50cal gun
AIM-9L missile
Stealth
Advanced
No
No
No
Night Flight
Yes
Yes
Yes
Limited
All Weather
Yes
Yes
Limited
Limited
Communication
Non-line-of-sight,
Line-of-sight,
Line-of sight,
Line-of-sight,
digitized, joint
non-digital voice
non-digital voice
non-digital voice
Sensors
EO, laser
TV IR radar,
TV, FLIR, laser
TV, IR radar,
designator, 2nd
laser designator,
designator
laser designator
gen.
2nd gen.
FLIR/MMW/TV
FLIR/MMW/TV
target detect/acq.
target detect/acq.

---