Air carrier departed without proper maintenance documentation.

Attributes
ACN	447770
Time
Date	199908
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos.airport
State Reference	MA
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 12500
ASRS Report	447782
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 180 flight time total : 12500 flight time type : 3500
ASRS Report	447770
Events
Anomaly	maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : company policies
Independent Detector	other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft departed out of a 5 day check. The airline uses a 10 day inspection and a 5 day. The aircraft was getting heavy maintenance during the 5 day and was still good for its 10 day. It was released from maintenance but not given another 5 day. The crew checked the 10 day but missed the lack of a 5 day signoff. The crew thought the 10 day inspection, which was current, was all that was needed once released from maintenance.

Original NASA ASRS Text

Title: ACR DEPARTED WITHOUT PROPER MAINT DOCUMENTATION.

Narrative: ACFT DEPARTED OUT OF A 5 DAY CHK. THE AIRLINE USES A 10 DAY INSPECTION AND A 5 DAY. THE ACFT WAS GETTING HVY MAINT DURING THE 5 DAY AND WAS STILL GOOD FOR ITS 10 DAY. IT WAS RELEASED FROM MAINT BUT NOT GIVEN ANOTHER 5 DAY. THE CREW CHKED THE 10 DAY BUT MISSED THE LACK OF A 5 DAY SIGNOFF. THE CREW THOUGHT THE 10 DAY INSPECTION, WHICH WAS CURRENT, WAS ALL THAT WAS NEEDED ONCE RELEASED FROM MAINT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.