PIC in corporate jet accepts flight assignment for a part 91 operation with legal rest for part 91. ...

Attributes
ACN	303637
Time
Date	199505
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ims
State Reference	WI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 6150 flight time type : 1200
ASRS Report	303637
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On may/xx/95 I flew a part 135 trip which returned to base at a block-in time of PM00 hours and a duty off of AM30 hours. I had been away from home for a very busy 5 days. Shortly after getting home, I received a call from one of our dispatchers asking if I would take a part 91 trip in the morning with a 1/2 hour show of AM00 hours for a AM30 hour departure. I accepted the part 91 trip. After finishing that trip, which ended in madison, in (ims) and during our postflt, dispatcher called and asked us to take a part 135 trip from lex to lit. The dispatcher said we had to depart for lex immediately to make the trip on time. He was very hurried in his voice. Quickly thinking of time, the PM00 hour block-in time came to mind and with the 1/2 hour show of AM00 hours I thought I had the proper rest to accept the trip. Why the block-in time and not the duty time off came to mind I really don't know. With the long week I had had and the hurried manner of the dispatcher, that's the time I remembered first. That evening another dispatcher called to inform me that they had caught the mistake of having only 9.5 hours rest for the part 135 trip. I think that operations that operate both part 91 and part 135 should have the same rest requirement for part 91 trips that they do for part 135 trips, that way there will never by any question as to whether or not there was enough rest time for a part 135 trip.

Original NASA ASRS Text

Title: PIC IN CORPORATE JET ACCEPTS FLT ASSIGNMENT FOR A PART 91 OP WITH LEGAL REST FOR PART 91. LATER, WHILE AWAY FROM HOME BASE, ACCEPTS A PART 135 ASSIGNMENT AND FAILS TO REALIZE HE WAS SHORTED BY 30 MINS ON LEGAL REST REQUIRED FOR NEXT OP UNDER PART 135.

Narrative: ON MAY/XX/95 I FLEW A PART 135 TRIP WHICH RETURNED TO BASE AT A BLOCK-IN TIME OF PM00 HRS AND A DUTY OFF OF AM30 HRS. I HAD BEEN AWAY FROM HOME FOR A VERY BUSY 5 DAYS. SHORTLY AFTER GETTING HOME, I RECEIVED A CALL FROM ONE OF OUR DISPATCHERS ASKING IF I WOULD TAKE A PART 91 TRIP IN THE MORNING WITH A 1/2 HR SHOW OF AM00 HRS FOR A AM30 HR DEP. I ACCEPTED THE PART 91 TRIP. AFTER FINISHING THAT TRIP, WHICH ENDED IN MADISON, IN (IMS) AND DURING OUR POSTFLT, DISPATCHER CALLED AND ASKED US TO TAKE A PART 135 TRIP FROM LEX TO LIT. THE DISPATCHER SAID WE HAD TO DEPART FOR LEX IMMEDIATELY TO MAKE THE TRIP ON TIME. HE WAS VERY HURRIED IN HIS VOICE. QUICKLY THINKING OF TIME, THE PM00 HR BLOCK-IN TIME CAME TO MIND AND WITH THE 1/2 HR SHOW OF AM00 HRS I THOUGHT I HAD THE PROPER REST TO ACCEPT THE TRIP. WHY THE BLOCK-IN TIME AND NOT THE DUTY TIME OFF CAME TO MIND I REALLY DON'T KNOW. WITH THE LONG WK I HAD HAD AND THE HURRIED MANNER OF THE DISPATCHER, THAT'S THE TIME I REMEMBERED FIRST. THAT EVENING ANOTHER DISPATCHER CALLED TO INFORM ME THAT THEY HAD CAUGHT THE MISTAKE OF HAVING ONLY 9.5 HRS REST FOR THE PART 135 TRIP. I THINK THAT OPS THAT OPERATE BOTH PART 91 AND PART 135 SHOULD HAVE THE SAME REST REQUIREMENT FOR PART 91 TRIPS THAT THEY DO FOR PART 135 TRIPS, THAT WAY THERE WILL NEVER BY ANY QUESTION AS TO WHETHER OR NOT THERE WAS ENOUGH REST TIME FOR A PART 135 TRIP.

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.

PIC in corporate jet accepts flight assignment for a part 91 operation with legal rest for part 91. Later, while away from home base, accepts a part 135 assignment and fails to realize he was shorted by 30 mins on legal rest required for next operation under part 135.