CAEP/
6­
WP/
34
NOx
Production
Cut­
off
Considerations
Presented
by
ICCAIA
Is
There
a
Need
for
a
CAEP/
4
NOx
Production
Cut­
off?

°
Historically,
the
purpose
of
a
production
cut­
off
has
been
to
prevent
industry
from
continuing
to
manufacture
products
not
in
compliance
with
recent
standards
°
Industry,
however,
as
demonstrated
during
the
adoption
of
the
CAEP/
4
NOx
standard,
has
responded
to
reasonable
standards
and
market
forces
by
incorporating
the
best
available
technology
into
their
products,
even
without
an
accompanying
production
cut­
off
 
Today,
all
but
one
in
production
engine
has
met
the
CAEP/
4
NOx
standard
long
before
it
took
effect
after
31
December
2003
°
Technology
has
been
identified
to
make
this
engine
compliant
 
The
overwhelming
compliance
rate
suggests
that
a
production
cut­
off
is
not
required
Reasonable
standards
and
market
forces
are
the
primary
drivers
to
new
technology
development
and
incorporation,
not
production
cut­
offs!
Industry
is
Proactive
in
Meeting
Reasonable
Standards
Long
Before
Implementation
Dates
ENGINE
STATUS
IN
MEETING
CAEP/
4
STANDARD
(
1)

1998
In­
Production
PS
90A
Unknown
JT­
8D
No
longer
in
production
PW2040
TL1
 
compliant
PW4090
Out
of
production
(
replaced
with
new
engine
family,
see
below)

PW4164,
68
TL2
 
compliant
(
Talon
II)

RB211­
524
series
TL2
 
compliant
(
Phase
5)

RB211­
535
series
TL2
 
compliant
(
Phase
5)

New
Types
(
2)

PW4074D
(
3)
Compliant
PW4077D,
84D,
90
(
3
Technology
identified
PWC
Growth
Engines
Compliant
(
1)
TL1
and
TL2
are
consistent
with
CAEP/
6­
WP/
19.

(
2)
Engines
programs
nearing
completion
but
not
certified
in
1998.

(
3)
PW4074D,
4077D,
4084D,
and
4090
are
one
engine
family
with
common
bill
of
material
(
B.
O.
M.).
and
is
not
the
same
as
PW4090
that
is
listed
under
the
"
1998
In­
Production"
heading.

Status
of
Engines
Not
Meeting
CAEP/
4
NOx
Standard
in
1998
Recommendations
°
ICCAIA
recommends
no
CAEP/
4
NOx
Production
Cut­
off
at
CAEP/
6
°
By
taking
this
action,
CAEP
can
confirm
the
strength
of
market
forces
&
reasonable
standards
as
a
driver
for
industry
to
continue
to
achieve
regulatory
compliance
 
A
reasonable
CAEP/
6
NOx
standard
will
reinforce
market
pressure
on
manufacturers
to
incorporate
best
available
technology
into
their
products
that
meet
and
exceed
CAEP/
6,
not
CAEP/
4
 
Expands
the
scope
of
ICAO
policies
to
achieve
environmental
objectives
 
Minimal
environmental
risk
(
Paris
SG
FESG
Interim
Analysis
Report
&
CAEP/
6­
WP18
and
IP13),

potentially
high
benefits
