A GPS Snip from Trimble

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Interesting snip from Trimble.com

Sounds a little more serious than the standard disclaimer, doesn't it?

::::

Caution GPS manufacturers are unable to predict with absolute certainty the precise manner in which GPS and associated firmware, software and systems will actually perform as a result of the Y2K and WNRO events. Regardless of the manufacturer, Trimble recommends extreme caution in any situation in which a product's failure or inaccuracy would pose any risk of injury, damage or loss to persons, property or critical data. In these cases, Trimble recommends that GPS not be relied upon at, after, or within the week before the Y2K and WNRO date rollovers, and until robust and accurate performance following the rollovers is conclusively established. Use of GPS products during these events is potentially hazardous.

-- Jon Johnson (narnia4@usa.net), July 12, 1999

Answers

You are right on this one Jon. Is there a link?

-- Mike Lang (webflier@erols.com), July 12, 1999.

Sounds like they're going to have to fix on failure? (Damned if they DO test--damned if they don't?)

-- wondering (what@to.believe), July 12, 1999.

Link:

Trimble.com/Y2Kwnro./infoblt.htm

-- Jon Johnson (narnia4@usa.net), July 12, 1999.


Also, if you look around at Trimble you will find a link to the airforce site, with several powerpoint presentations you can view.

In addition, also reached from Trimble, check out:

http://www.laafb.af.mil/SMC/CZ/homepage/y2000/index.html

In case you want a primer on the defenses that could be affected, including "Space Missle Command" (did I really see that?).

-- Jon Johnson (narnia4@usa.net), July 12, 1999.


Ah, what the heck: heres the list at that last site I mentioned anyway --- note that the JPO doesn't have any data --- but not to worry, it wasn't "Space Missle Command" I saw, just things like "Missle and Space Intelligence Center" : the DOD says they're compliant, the reporting agency says it "has no data" ------- hmmmmmmmmmm ------------ I'm sure every item on this partial list is OK, Willie Jeff says so.

DoD Procured and Compliant The compliant receivers listed below are the results of inputs from the various DoD agencies. The GPS JPO does not support nor deny their claims since the receivers were not tested at a JPO test facility. The JPO does not have any test data on the receivers below. Please contact the appropriate agencies for data."

Note: AMSEL-RD-NV-SSA-NS had obtained commercial company declarations of Y2K compliance. As these were not Government test results, the previously reported receivers were therefore removed from the list.

Receiver - by manufacturer Organization - responsible for test AEGIS Weapons System (AWS) PEO Theater Surface Combatants* Allied Signal KLN 670 GPS Receiver OC-ALC/LKR Allied Signal KLN-900 ASC/YTJ AN/ASN-149 US Army Special Operations Command, AMSAM-AR-Z-A-TS, Technology Applications Program Office, Ft Eustis, VA Army Embedded GPS Receiver (AEGR) PEO-GCSS Ground Combat and Support Systems TACOM Warren, MI Ashtech COTS surveying units CSTE-TEX-OS TEXCOM Ashtech Sensor II ASC/GRE for ASC/GRE Ashtech Z(Y)-12 NIMA Bendix/King KLN-90B OC-ALC/LKR CACR CSTE-TEX-OS TEXCOM Cambridge Model 20 OC-ALC/LKR Collins MMR GLU-920 OC-ALC/LKR Corvallis March II-E AMSEL-RD-NV-SSA-NS Datum GPS Time Code Generator, model # 970DAT, Product ID 51899 DIA, Missile & Space Intelligence Center, FMS-800 w/ internal GPS OC-ALC/LKR Garmin Hand Held Ft Lewis and I Corps GNS-XLS Naval Air Systems Command (PMA207) GP-80 SOIO-C4I-ED US Special Operations Command GPSS (Trimble MSGR 4000), version 7.57 NOCPAC, Fallbrook Det H-764G EGI US Army Special Operations Command, AMSAM-AR-Z-A-TS, Technology Applications Program Office, Ft Eustis, VA Hewlett Packard GPS Model # 59551A, Product ID 3706A00232 DIA, Missile & Space Intelligence Center, Hewlett Packard HP 595551A and HP58503A SMDC-KA-RI Kwajalein HG2021GB01 Naval Air Systems Command (PMA207) HG2021GD02 Naval Air Systems Command (PMA207) Honeywell GD02 OC-ALC/LKR Honeywell H-764G EGI AMSCB-VDL Honeywell HG2021 ASC/GRE for ASC/GRE IEC FMS w/ internal GPS and P/Y GRU OC-ALC/LKR IEC Next Generation Receiver P/N 7632300 WR-ALC/LJLM IEC-9002M Naval Air Systems Command (PMA207) JDAM ASC/YU Joint Air to Surface Standoff Missile (JASSM Anti-Jam GPS Receiver (JAGR), Raytheon System Company, part # 5157700-100 with CSCI 5157705. ASC/YV JASSM KLN-670 Naval Air Systems Command (PMA207) KLN-900 Naval Air Systems Command (PMA207) Leicz MX9012R DGPS Reference Station CSTE-TEX-AD TEXCOM LTN-410 OC-ALC/LKR Magellan GPS, Hand Held, Model Trailblazer XL, Product ID 6C204446 DIA, Missile & Space Intelligence Center, Magellan System Corporation Blazer Ft Lewis and I Corps Magnavox MX 7100 series CSTE-TEX-AD TEXCOM Magnavox MX-7230 ESC/DIAS MX-200 SOIO-C4I-ED US Special Operations Command Omnistar 7000-1a USAC Waterways Experiment Station, Fisheries Engineering Team US Army Corps of Engineers Bonneville Lock and Dam Raytheon System Company, part # 5157700-100 with CSCI 5157705. Joint Air to Surface Standoff Missile (JASSM Anti-Jam GPS Receiver (JAGR), ASC/YV JASSM Rockwell Collins GGP P/N 988-7150-001 DARPA Rockwell Collins MMR GLU-920 ASC/GRE for ASC/GRE Rockwell collins SLAM receiver processor, part# 1765AS0500, 822-0453-035 Naval Air Weapons Center, Code 47HC00D, Weapons Division Rockwell Collins JDAM / AGTFT GPS Receiver Module (GPSRM), P/N 882-0885-002; AGTFT GPSRM SW Ver. AGPS1002.155 (Boeing nomenclature) or 167-3056-001 (Rockwell Collins Nomenclature); JDAM / AGTFT GCU Circuit Card Assembly P/N 70P865806-1003 & AGTFT GCU SW ver. AGT103.155 AFRL/MNAV Rockwell FMS-800 w/ embedded GPS/INS OC-ALC/LC Rockwell GNP-10 411 FLTS/TEVS Rockwell HNV560 CESWF-OD-PW Piney Woods Rockwell HNV560 Piney Woods Project, Ft Worth District, Army Corps of Engineers Rockwell MPE 1.5 P/N 601-1665-011 US Army Soldier Systems Command, Natick RDEC, Associate Dir. Operations & Management Rockwell MPE1.5 P/N 601-1665-011 SSCPM-LW US Army Soldier Systems Cmd PM Soldier Ft Belvoir Rockwell PLGR P/N 8220077-103 Naval Facilities Engineering Service Center, Port Hueneme Rockwell Type 51-MIGITS-1 CSTE-TEX-AD TEXCOM Rockwell Type HNV-560C HQ Space Warfare Center (AFSPC)/DO Rockwell, NSN 5825013746643, AN/PSN-11, Picatinny Arsenal, ARDEC, Fire Armaments Center, Fire Control and Software Engineering Division Ship Self Defense System (SSDS MK1) Receiver 3S or R-2331/URN PEO Theater Surface Combatants* SLAM, SLAM ER NAVWAR, Weapons Div TNL-2101A Naval Air Systems Command (PMA207) TRAXAR GPS SOIO-C4I-ED US Special Operations Command Trimble COTS surveying units CSTE-TEX-OS TEXCOM Trimble Force 13, highly modified Draper Part No. 28956-00 Charles Stark Draper Laboratory Trimble Force 13, Part # 28956-00 Strategic Systems Programs, SP2823 Trimble Force 2 AMCPM-ITTTS-S Redstone Arsenal Trimble MSGR 4000 (GPSS) version 7.57 NOCPAC, Fallbrook Det Trimble TA-12 OC-ALC/LKR Trimble TASMAN OC-ALC/LKR Trimble Tasman ASC/GRE for ASC/GRE Trimble Tasman P/Y Sensor P/N 22013-00 Naval Oceanographic Office Trimble TDC1 CESWF-OD-PW Piney Woods Trimble TDC1 Piney Woods Project, Ft Worth District, Army Corps of Engineers Trimble TNL-3100 US Army Special Operations Command, AMSAM-AR-Z-A-TS, Technology Applications Program Office, Ft Eustis, VA True Time models 705 and XDLC 601 CSTE-TEX-AD TEXCOM TrueTime Model # 151-308PY-104 White House Communications Agency UNS-1C FMS w/ embedded C/A GPS with external P/Y TASMAN GPS recvr OC- ALC/LKR UNS-1D Naval Air Systems Command (PMA207) UNS-1D w/ internal GPS OC-ALC/LKR Vertical Launching System (MK 41 VLS) GEM3 PEO Theater Surface Combatants* VPLGR+96 PN 822-1076-XX0 SW: 613 9868-XXX OO-ALC/PK-2

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-- Jon Johnson (narnia4@usa.net), July 12, 1999.



Jon, that is lawyer babble meant to insulate them from such non- approved uses of GPS as the Korean airliner that landed at Kennedy a few months back using nothing for navigation but a $500 GPS receiver one of the pilots carried as a backup. They actually took off with almost nothing working in the navigation console, and when the navcon went out entirely, kept on with the GPS. I daresay that if it had happenned a few months later and the GPS receiver had gone out due to Y2K problems, some lawyer would have blamed the crash on Y2K. How about pilot error - no - pilot STUPIDITY!

I will go so far as to make a flat out prediction here. ASIDE from idiots using GPS for things it is not supposed to be used for (such as a cheap civilian receiver as the sole navigation aid for a commercial airliner) you will hear of NO major problems with the GPS rollover. You may hear of 3 or 4 minor problems, but no major ones involving company or banking data or commercial navigation errors. A few (not many) of the really cheap civilian brands of receivers may quit working. That's it.

You only have 6 weeks to wait to find out who is right.

Go ahead and attack now WILL CONTINUE. Don't you hate being that predictable? Better not get stuck in a rut - those mysterious snipers will get you if you follow a pattern.

-- Paul Davis (davisp1953@yahoo.com), July 12, 1999.


Mr. Davis--I believe the term pilot error is incorrect. Today, cockpit related discrepancies resulting in mishaps or near mishaps are referred to as human factors.

-- AV8R (av8r@aol.com), July 12, 1999.

Any way you want to put it, a pilot who flies over water, carrying passengers, with nothing for navigation equipment but a personal GPS receiver, is a total idiot.

-- Paul Davis (davisp1953@yahoo.com), July 13, 1999.

To the "total idiot" conclusion, I concur wholeheartedly.

But, what do you call a pilot who takes off for a cross-country flight Dec 31, 1999 at 2200 from a US airport?

Right now - we don't know enough to know if he is simply making a routine flight, simply following orders without thinking, incredibly brave, incredibly foolish, or a "total idiot" either. We "should" know more by early December, but ... will they "tell" us, or will they "protect us"?

-- Robert A Cook, PE (Kennesaw, GA) (cook.r@csaatl.com), July 13, 1999.


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