Form 41 Filings Compared to SEC Filings
Northwest
	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Revenue
Passenger Revenue ($Millions)
F41	$     7,762	$     8,598	$     8,722	$     7,513	$     8,587	$     9,523	$     8,219	$     7,753	$     7,617	$     8,432	$     8,838	$     9,051
SEC	$     7,762	$     8,598	$     8,822	$     7,607	$     8,692	$     9,653	$     8,417	$     8,025	$     7,632	$     8,432	$     8,902	$     9,230
% Diff.	(0.0%)	(0.0%)	(1.1%)	(1.2%)	(1.2%)	(1.3%)	(2.4%)	(3.4%)	(0.2%)	(0.0%)	(0.7%)	(1.9%)
Total Revenue ($Millions)
F41	$     8,909	$     9,751	$     9,984	$     8,707	$     9,868	$    10,957	$     9,592	$     9,152	$     9,184	$    11,266	$    12,316	$    12,555
SEC	$     9,085	$     9,881	$    10,226	$     9,045	$    10,276	$    11,240	$     9,905	$     9,489	$    10,077	$    11,279	$    12,286	$    12,568
% Diff.	(1.9%)	(1.3%)	(2.4%)	(3.7%)	(4.0%)	(2.5%)	(3.2%)	(3.6%)	(8.9%)	(0.1%)	0.2%	(0.1%)
	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Expenses
Fuel ($Millions)
F41	$     1,084	$     1,397	$     1,383	$     1,087	$     1,182	$     1,859	$     1,704	$     1,405	$     1,497	$     2,166	$     3,045	$     3,318
SEC	$     1,084	$     1,397	$     1,394	$     1,097	$     1,191	$     1,872	$     1,727	$     1,439	$     1,554	$     2,203	$     3,132	$     3,386
% Diff.	0.0%	0.0%	(0.8%)	(0.9%)	(0.8%)	(0.7%)	(1.3%)	(2.4%)	(3.6%)	(1.7%)	(2.8%)	(2.0%)
Labor ($Millions)
F41 (No Personnel Expense)	$     2,864	$     2,915	$     2,964	$     3,200	$     3,334	$     3,537	$     3,878	$     3,786	$     3,794	$     3,735	$     3,662	$     2,604
SEC	$     2,890	$     2,952	$     3,024	$     3,261	$     3,393	$     3,610	$     3,963	$     3,878	$     3,905	$     3,796	$     3,721	$     2,662
% Diff.	(0.9%)	(1.2%)	(2.0%)	(1.9%)	(1.7%)	(2.0%)	(2.1%)	(2.4%)	(2.9%)	(1.6%)	(1.6%)	(2.2%)
Maintenance $Millions)
F41 (No Labor)	$        693	$        861	$        923	$     1,100	$        966	$        992	$     1,107	$        982	$        752	$        689	$     1,034	$        897
SEC	$        395	$        556	$        620	$        761	$        635	$        640	$        669	$        576	$        474	$        463	$        703	$        796
% Diff.	75.3%	54.9%	48.9%	44.6%	52.1%	55.0%	65.5%	70.4%	58.6%	48.7%	47.1%	12.6%
Regional (SEC)/Transport Related (F41) ($Millions)
F41	$        102	$        100	$        101	$          64	$          78	$        112	$        147	$        163	$        186	$     1,431	$     1,895	$     1,626
SEC									$        567	$     1,210	$     1,576	$     1,406
% Diff.									(67.3%)	18.2%	20.2%	15.6%
Total Operating Expense ($Millions)
F41	$     7,999	$     8,643	$     8,780	$     8,836	$     9,099	$    10,293	$    10,388	$     9,935	$     9,460	$    11,700	$    13,211	$    11,773
SEC	$     8,172	$     8,827	$     9,069	$     9,236	$     9,562	$    10,671	$    10,773	$    10,335	$    10,342	$    11,784	$    13,205	$    11,828
% Diff.	(2.1%)	(2.1%)	(3.2%)	(4.3%)	(4.8%)	(3.5%)	(3.6%)	(3.9%)	(8.5%)	(0.7%)	0.0%	(0.5%)
Pre-Tax Income ($Millions)
F41	$726	$924	$990	($366)	$474	$449	($646)	($1,200)	$448	($756)	($2,241)	($2,791)
SEC	$544	$872	$985	($430)	$487	$435	($670)	($1,220)	$218	($861)	($2,457)	($2,864)
% Diff.	33.6%	5.9%	0.5%	(14.8%)	(2.6%)	3.2%	(3.5%)	(1.6%)	105.6%	(12.2%)	(8.8%)	(2.6%)
	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Traffic
Revenue Passenger Miles (Millions)
F41	62,668	68,719	72,174	66,828	74,263	79,252	73,280	72,142	68,762	73,403	75,920	72,690
SEC	62,515	68,639	72,031	66,738	74,168	79,128	73,126	72,027	68,476	73,312	75,820	72,606
% Diff.	0.2%	0.1%	0.2%	0.1%	0.1%	0.2%	0.2%	0.2%	0.4%	0.1%	0.1%	0.1%
Available Seat Miles (Millions)
F41	87,673	94,021	97,152	91,444	99,575	103,527	98,565	93,583	89,077	91,510	91,915	85,716
SEC	87,472	93,914	96,964	91,311	99,446	103,356	98,356	93,417	88,593	91,378	91,775	85,603
% Diff.	0.2%	0.1%	0.2%	0.1%	0.1%	0.2%	0.2%	0.2%	0.5%	0.1%	0.2%	0.1%

ss=xl70 align=right>0.2% 0.5% 0.1% 0.2% 0.1%