Receivables

Receivables consist of:



	September 28, 2013			September 29, 2012
Accounts receivable	$	328,038		$	338,000
Long-term contract receivables:
Amounts billed	133,149			114,482
Unbilled recoverable costs and accrued profits	337,520			286,887
Total long-term contract receivables	470,669			401,369
Other	17,168			10,936
Total receivables	815,875			750,305
Less allowance for doubtful accounts	(4,499		)	(5,754		)
Receivables	$	811,376		$	744,551

Under our trade receivables securitization facility (the "Securitization Program"), we securitize certain trade receivables in transactions that are accounted for as secured borrowings. We maintain a subordinated interest in a portion of the pool of trade receivables that are securitized. The retained interest, which is included in receivables in the consolidated balance sheets, is recorded at fair value, which approximates the total amount of the designated pool of accounts receivable. See Note 7, Indebtedness, for additional disclosures related to the Securitization Program.

Long-term contract receivables are primarily associated with prime contractors and subcontractors in connection with U.S. Government contracts, commercial aircraft and satellite manufacturers. Amounts billed under long-term contracts to the U.S. Government were $11,532 at September 28, 2013 and $7,413 at September 29, 2012. Unbilled recoverable costs and accrued profits under long-term contracts to be billed to the U.S. Government were $11,963 at September 28, 2013 and $4,223 at September 29, 2012. Unbilled recoverable costs and accrued profits principally represent revenues recognized on contracts that were not billable on the balance sheet date. These amounts will be billed in accordance with contract terms, generally as certain milestones are reached or upon shipment. Approximately three-quarters of unbilled amounts are expected to be collected within one year. In situations where billings exceed revenues recognized, the excess is included in customer advances.

There are no material amounts of claims or unapproved change orders included in the consolidated balance sheets. Balances billed but not paid by customers under retainage provisions are not material.

Concentrations of credit risk on receivables are limited to those from significant customers who are believed to be financially sound. Receivables from Boeing were $182,050 at September 28, 2013 and $139,287 at

September 29, 2012. We perform periodic credit evaluations of our customers’ financial condition and generally do not require collateral.