The holding pattern shown for ott on the ravnn one RNAV arrival to bwi in the FMC database for one a...

Attributes
ACN	735012
Time
Date	200704
Place
Locale Reference	navaid : ott.vortac
State Reference	MD
Altitude	msl single value : 9000
Aircraft 1
Controlling Facilities	tracon : bwi.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival star : ravnn
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	735012
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Company Aircraft Chart Or Publication
Primary Problem	Aircraft

Narrative:

The holding pattern contained in the FMC for ott on the RAVNN1 STAR into bwi is incorrect. The holding pattern contained is the one depicted on the us hi(4) en route chart which shows: quad/rad southwest 226 inbd crs/dir 046 left leg time 1.5 min. The holding pattern at ott for the RAVNN1 is different and the FMC holding pattern should actually show: quad/rad southwest 234 inbd crs/dir 054 right leg length 13 mi. No pltdevs or events have occurred due to this error in the FMC software to my knowledge. However; there are 2 separate holding patterns published for ott which are completely different. The holding pattern depicted in the FMC should match up with the arrival actually being flown. My recommendation is for the FMC software to be updated to reflect the correct holding pattern used at ott on the RAVNN1 STAR. Callback conversation with reporter revealed the following information: a recent check in both the carriers B737-300 and -700 showed no change in the holding pattern. There has been no FMC database revision since the original report. The reporter did not indicate which model FMC is installed in the aircraft.

Original NASA ASRS Text

Title: THE HOLDING PATTERN SHOWN FOR OTT ON THE RAVNN ONE RNAV ARR TO BWI IN THE FMC DATABASE FOR ONE ACR'S B737 FLEET IS NOT THE SAME AS PUBLISHED FOR THE ARR.

Narrative: THE HOLDING PATTERN CONTAINED IN THE FMC FOR OTT ON THE RAVNN1 STAR INTO BWI IS INCORRECT. THE HOLDING PATTERN CONTAINED IS THE ONE DEPICTED ON THE US HI(4) ENRTE CHART WHICH SHOWS: QUAD/RAD SW 226 INBD CRS/DIR 046 L LEG TIME 1.5 MIN. THE HOLDING PATTERN AT OTT FOR THE RAVNN1 IS DIFFERENT AND THE FMC HOLDING PATTERN SHOULD ACTUALLY SHOW: QUAD/RAD SW 234 INBD CRS/DIR 054 R LEG LENGTH 13 MI. NO PLTDEVS OR EVENTS HAVE OCCURRED DUE TO THIS ERROR IN THE FMC SOFTWARE TO MY KNOWLEDGE. HOWEVER; THERE ARE 2 SEPARATE HOLDING PATTERNS PUBLISHED FOR OTT WHICH ARE COMPLETELY DIFFERENT. THE HOLDING PATTERN DEPICTED IN THE FMC SHOULD MATCH UP WITH THE ARR ACTUALLY BEING FLOWN. MY RECOMMENDATION IS FOR THE FMC SOFTWARE TO BE UPDATED TO REFLECT THE CORRECT HOLDING PATTERN USED AT OTT ON THE RAVNN1 STAR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: A RECENT CHK IN BOTH THE CARRIERS B737-300 AND -700 SHOWED NO CHANGE IN THE HOLDING PATTERN. THERE HAS BEEN NO FMC DATABASE REVISION SINCE THE ORIGINAL RPT. THE RPTR DID NOT INDICATE WHICH MODEL FMC IS INSTALLED IN THE ACFT.

Data retrieved from NASA's ASRS site as of January 2009 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.

The holding pattern shown for ott on the ravnn one RNAV arrival to bwi in the FMC database for one air carrier's B737 fleet is not the same as published for the arrival.