Atx small transport aircraft was operated without the current weight and balance data.

Attributes
ACN	220428
Time
Date	199209
Day	Tue
Place
Locale Reference	airport : bwi
State Reference	MD
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	climbout : takeoff cruise other landing other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 40 flight time total : 2300 flight time type : 300
ASRS Report	220428
Person 2
Affiliation	company : air taxi
Function	other personnel other
Qualification	other other : other
ASRS Report	220429
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	faa : assigned or threatened penalties faa : investigated
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The aircraft I command had a radar unit removed, however company internal paperwork did not pass the weight difference through to the aircraft status sheet. As a result, all my weight and balance computations were in error. Contributing to the problem was FAA inspectors different input to company officials on whether a form 337 was required for this remedial action. Air crews rely on maintenance generated paperwork for important loading computations. I suggest the FAA release an a-c to all air crews and operators mandating the use of form 337 whenever anything attached to an airplane is changed. This incident has to us, uncovered a real regulatory area in need of clarification.

Original NASA ASRS Text

Title: ATX SMT ACFT WAS OPERATED WITHOUT THE CURRENT WT AND BAL DATA.

Narrative: THE ACFT I COMMAND HAD A RADAR UNIT REMOVED, HOWEVER COMPANY INTERNAL PAPERWORK DID NOT PASS THE WT DIFFERENCE THROUGH TO THE ACFT STATUS SHEET. AS A RESULT, ALL MY WT AND BAL COMPUTATIONS WERE IN ERROR. CONTRIBUTING TO THE PROBLEM WAS FAA INSPECTORS DIFFERENT INPUT TO COMPANY OFFICIALS ON WHETHER A FORM 337 WAS REQUIRED FOR THIS REMEDIAL ACTION. AIR CREWS RELY ON MAINT GENERATED PAPERWORK FOR IMPORTANT LOADING COMPUTATIONS. I SUGGEST THE FAA RELEASE AN A-C TO ALL AIR CREWS AND OPERATORS MANDATING THE USE OF FORM 337 WHENEVER ANYTHING ATTACHED TO AN AIRPLANE IS CHANGED. THIS INCIDENT HAS TO US, UNCOVERED A REAL REGULATORY AREA IN NEED OF CLARIFICATION.

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.