2019-27528. Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous Amendments

AGENCY:

Federal Aviation Administration (FAA), DOT.

ACTION:

Final rule.

SUMMARY:

This rule amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide for the safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.

DATES:

This rule is effective December 23, 2019. The compliance date for each SIAP, associated Takeoff Minimums, and ODP is specified in the amendatory provisions.

The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of December 23, 2019.

ADDRESSES:

Availability of matter incorporated by reference in the amendment is as follows:

For Examination

1. U.S. Department of Transportation, Docket Ops-M30, 1200 New Jersey Avenue SE, West Bldg., Ground Floor, Washington, DC 20590-0001;

2. The FAA Air Traffic Organization Service Area in which the affected airport is located;

3. The office of Aeronautical Navigation Products, 6500 South MacArthur Blvd., Oklahoma City, OK 73169 or,

4. The National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email [e-mail] or go to: https://www.archives.gov/​federal-register/​cfr/​ibr-locations.html.

Availability

All SIAPs and Takeoff Minimums and ODPs are available online free of charge. Visit the National Flight Data Center online at nfdc.faa.gov to register. Additionally, individual SIAP and Takeoff Minimums and ODP copies may be obtained from the FAA Air Traffic Organization Service Area in which the affected airport is located.

FOR FURTHER INFORMATION CONTACT:

Thomas J. Nichols, Flight Procedures and Airspace Group, Flight Technologies and Procedures Division, Flight Standards Service, Federal Aviation Administration. Mailing Address: FAA Mike Monroney Aeronautical Center, Flight Procedures and Airspace Group, 6500 South MacArthur Blvd., Registry Bldg. 29, Room 104, Oklahoma City, OK 73169. Telephone: [phone].

SUPPLEMENTARY INFORMATION:

This rule amends Title 14, Code of Federal Regulations, Part 97 (14 CFR part 97) by amending the referenced SIAPs. The complete regulatory description of each SIAP is listed on the appropriate FAA Form 8260, as modified by the National Flight Data Center (NFDC)/Permanent Notice to Airmen (P-NOTAM), and is incorporated by reference under 5 U.S.C. 552(a), 1 CFR part 51, and 14 CFR 97.20. The large number of SIAPs, their complex nature, and the need for a special format make their verbatim publication in the Federal Register expensive and impractical. Further, airmen do not use the regulatory text of the SIAPs, but refer to their graphic depiction on charts printed by publishers of aeronautical materials. Thus, the advantages of incorporation by reference are realized and publication of the complete description of each SIAP contained on FAA form documents is unnecessary.

This amendment provides the affected CFR sections, and specifies the SIAPs and Takeoff Minimums and ODPs with their applicable effective dates. This amendment also identifies the airport and its location, the procedure and the amendment number.

Availability and Summary of Material Incorporated by Reference

The material incorporated by reference is publicly available as listed in the ADDRESSES section.

The material incorporated by reference describes SIAPs, Takeoff Minimums and ODPs as identified in the amendatory language for part 97 of this final rule.

The Rule

This amendment to 14 CFR part 97 is effective upon publication of each separate SIAP and Takeoff Minimums and ODP as amended in the transmittal. For safety and timeliness of change considerations, this amendment incorporates only specific changes contained for each SIAP and Takeoff Minimums and ODP as modified by FDC permanent NOTAMs.

The SIAPs and Takeoff Minimums and ODPs, as modified by FDC permanent NOTAM, and contained in this amendment are based on the criteria contained in the U.S. Standard for Terminal Instrument Procedures (TERPS). In developing these changes to SIAPs and Takeoff Minimums and ODPs, the TERPS criteria were applied only to specific conditions existing at the affected airports. All SIAP amendments in this rule have been previously issued by the FAA in a FDC NOTAM as an emergency action of immediate flight safety relating directly to published aeronautical charts.

The circumstances that created the need for these SIAP and Takeoff Minimums and ODP amendments require making them effective in less than 30 days.

Because of the close and immediate relationship between these SIAPs, Takeoff Minimums and ODPs, and safety in air commerce, I find that notice and public procedure under 5 U.S.C. 553(b) are impracticable and contrary to the public interest and, where applicable, under 5 U.S.C. 553(d), good cause exists for making these SIAPs effective in less than 30 days.

The FAA has determined that this regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current. It, therefore—(1) is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a regulatory evaluation as the anticipated impact is so minimal. For the same reason, the FAA certifies that this amendment will not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 97

• Air traffic control
• Airports
• Incorporation by reference
• Navigation (Air)

Issued in Washington, DC, on December 13, 2019.

Rick Domingo,

Executive Director, Flight Standards Service.

Adoption of the Amendment

Accordingly, pursuant to the authority delegated to me, Title 14, Code of Federal regulations, Part 97, (14 CFR part 97), is amended by amending Standard Instrument Approach Procedures and Takeoff Minimums and ODPs, effective at 0901 UTC on the dates specified, as follows:

PART 97—STANDARD INSTRUMENT APPROACH PROCEDURES

1. The authority citation for part 97 continues to read as follows:

Authority: 49 U.S.C. 106(f), 106(g), 40103, 40106, 40113, 40114, 40120, 44502, 44514, 44701, 44719, 44721-44722.

2. Part 97 is amended to read as follows:

By amending: § 97.23 VOR, VOR/DME, VOR or TACAN, and VOR/DME or TACAN; § 97.25 LOC, LOC/DME, LDA, LDA/DME, SDF, SDF/DME; § 97.27 NDB, NDB/DME; § 97.29 ILS, ILS/DME, MLS, MLS/DME, MLS/RNAV; § 97.31 RADAR SIAPs; § 97.33 RNAV SIAPs; and § 97.35 COPTER SIAPs, Identified as follows:

* * * Effective Upon Publication

AIRAC date	State	City	Airport	FDC No.	FDC date	Subject
30-Jan-20	WI	Kenosha	Kenosha Rgnl	9/0071	11/21/19	RNAV (GPS) RWY 25R, Orig-A.
30-Jan-20	WI	Kenosha	Kenosha Rgnl	9/0095	11/21/19	RNAV (GPS) RWY 33, Orig-A.
30-Jan-20	AL	Clayton	Clayton Muni	9/0140	11/20/19	RNAV (GPS) RWY 9, Orig-C.
30-Jan-20	SC	Charleston	Charleston AFB/Intl	9/0142	11/20/19	RNAV (RNP) Z RWY 21, Orig-B.
30-Jan-20	WA	Port Angeles	William R Fairchild Intl	9/0212	11/20/19	RNAV (GPS) RWY 26, Amdt 1B.
30-Jan-20	CO	Fort Collins/Loveland	Northern Colorado Rgnl	9/0217	11/20/19	ILS OR LOC RWY 33, Amdt 6C.
30-Jan-20	CO	Fort Collins/Loveland	Northern Colorado Rgnl	9/0218	11/20/19	VOR-A, Amdt 7A.
30-Jan-20	KS	Herington	Herington Rgnl	9/0239	11/21/19	NDB RWY 17, Amdt 2A.
30-Jan-20	KS	Herington	Herington Rgnl	9/0280	11/21/19	NDB RWY 35, Amdt 2A.
30-Jan-20	WI	Solon Springs	Solon Springs Muni	9/0288	11/21/19	RNAV (GPS) RWY 19, Orig-B.
30-Jan-20	OH	Ravenna	Portage County	9/0314	11/20/19	VOR-A, Amdt 6A.
30-Jan-20	NH	Concord	Concord Muni	9/0319	11/20/19	ILS OR LOC RWY 35, Amdt 1C.
30-Jan-20	WA	Pullman/Moscow	Pullman/Moscow Rgnl	9/0473	11/20/19	RNAV (GPS) RWY 5, Amdt 3.
30-Jan-20	FL	Miami	Miami Intl	9/0475	11/20/19	RNAV (GPS) RWY 8L, Amdt 2A.
30-Jan-20	FL	Punta Gorda	Punta Gorda	9/0521	12/3/19	ILS OR LOC RWY 4, Orig.
30-Jan-20	FL	Punta Gorda	Punta Gorda	9/0522	12/3/19	RNAV (GPS) RWY 4, Amdt 2.
30-Jan-20	FL	Punta Gorda	Punta Gorda	9/0523	12/3/19	RNAV (GPS) RWY 15, Amdt 1.
30-Jan-20	FL	Punta Gorda	Punta Gorda	9/0529	12/3/19	RNAV (GPS) RWY 22, Amdt 2.
30-Jan-20	OH	Port Clinton	Erie-Ottawa Intl	9/0753	12/3/19	RNAV (GPS) RWY 9, Amdt 1A.
30-Jan-20	MI	Hastings	Hastings	9/0868	12/10/19	RNAV (GPS) RWY 30, Amdt 2.
30-Jan-20	OH	Port Clinton	Erie-Ottawa Intl	9/1073	11/20/19	RNAV (GPS) RWY 27, Amdt 1B.
30-Jan-20	IL	Galesburg	Galesburg Muni	9/1117	11/20/19	ILS OR LOC/DME RWY 3, Amdt 10A.
30-Jan-20	TX	Robstown	Nueces County	9/1118	11/20/19	Takeoff Minimums and Obstacle DP, Amdt 1.
30-Jan-20	AZ	Casa Grande	Casa Grande Muni	9/1564	11/20/19	VOR RWY 5, AMDT 4E.
30-Jan-20	PA	Waynesburg	Greene County	9/1979	11/21/19	RNAV (GPS) RWY 27, Orig-A.
30-Jan-20	IA	Winterset	Winterset Muni	9/2305	11/20/19	RNAV (GPS) RWY 32, Amdt 1.
30-Jan-20	TX	Big Lake	Reagan County	9/2482	12/10/19	RNAV (GPS) RWY 16, Orig.
30-Jan-20	IN	Peru	Peru Muni	9/2483	12/10/19	RNAV (GPS) RWY 1, Orig-B.
30-Jan-20	IN	Peru	Peru Muni	9/2484	12/10/19	VOR RWY 1, Amdt 8D.
30-Jan-20	IN	Peru	Peru Muni	9/2485	12/10/19	RNAV (GPS) RWY 19, Amdt 1A.
30-Jan-20	CA	San Diego/El Cajon	Gillespie Field	9/3264	11/20/19	RNAV (GPS) RWY 9L, Orig-A.
30-Jan-20	MI	Grand Rapids	Gerald R Ford Intl	9/3347	11/20/19	VOR RWY 17, Orig-E.
30-Jan-20	MA	Vineyard Haven	Martha's Vineyard	9/3403	11/20/19	RNAV (GPS) RWY 6, Amdt 1A.
30-Jan-20	MA	Vineyard Haven	Martha's Vineyard	9/3405	11/20/19	RNAV (GPS) RWY 33, Orig-A.
30-Jan-20	AL	Alexander City	Thomas C Russell Fld	9/3952	11/20/19	RNAV (GPS) RWY 18, Amdt 2.
30-Jan-20	MD	Frederick	Frederick Muni	9/3957	11/20/19	RNAV (GPS) Y RWY 23, Amdt 1D.
30-Jan-20	MD	Frederick	Frederick Muni	9/3959	11/20/19	RNAV (GPS) Z RWY 23, Orig-F.
30-Jan-20	KS	Phillipsburg	Phillipsburg Muni	9/3963	11/21/19	RNAV (GPS) RWY 13, Amdt 2.
30-Jan-20	KS	Phillipsburg	Phillipsburg Muni	9/3964	11/21/19	RNAV (GPS) RWY 31, Amdt 2.
30-Jan-20	GA	Cochran	Cochran	9/3987	11/20/19	VOR/DME RWY 5, Amdt 6A.
30-Jan-20	GA	Cochran	Cochran	9/3988	11/20/19	RNAV (GPS) RWY 11, Amdt 1B.
30-Jan-20	MT	Twin Bridges	Twin Bridges	9/3989	11/20/19	RNAV (GPS) RWY 17, Orig-A.
30-Jan-20	MT	Twin Bridges	Twin Bridges	9/3990	11/20/19	RNAV (GPS) RWY 35, Orig-A.
30-Jan-20	AK	Barrow	Wiley Post-Will Rogers Memorial	9/4063	11/20/19	VOR RWY 25, Amdt 1.
30-Jan-20	IL	Galesburg	Galesburg Muni	9/4182	11/20/19	VOR RWY 21, Amdt 7B.
30-Jan-20	OH	Dayton	Dayton-Wright Brothers	9/4743	12/10/19	RNAV (GPS) RWY 2, Orig.
30-Jan-20	OH	Dayton	Dayton-Wright Brothers	9/4744	12/10/19	RNAV (GPS) RWY 20, Orig-A.
30-Jan-20	WV	Moundsville	Marshall County	9/5072	11/20/19	RNAV (GPS) RWY 24, Orig-B.
30-Jan-20	CA	Novato	Gnoss Field	9/5311	11/20/19	GPS RWY 13, Orig.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5333	11/20/19	ILS OR LOC/DME RWY 12, Orig-A.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5334	11/20/19	RNAV (GPS) RWY 12, Amdt 1.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5335	11/20/19	RNAV (GPS) RWY 23, Orig.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5336	11/20/19	RNAV (GPS) RWY 30, Amdt 1A.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5337	11/20/19	VOR/DME RWY 5, Amdt 5.
30-Jan-20	NE	Scottsbluff	Western Nebraska Rgnl/William B Heilig Field	9/5339	11/20/19	VOR OR TACAN RWY 23, Amdt 12.
30-Jan-20	ID	Burley	Burley Muni	9/5402	11/20/19	RNAV (GPS) RWY 20, Orig-C.
30-Jan-20	MN	Granite Falls	Granite Falls Muni/Lenzen-Roe-Fagen Memorial Field	9/5448	11/20/19	VOR/DME RWY 33, Orig-B.
30-Jan-20	TX	Austin	Austin Executive	9/5479	11/22/19	RNAV (GPS) RWY 13, Orig.
30-Jan-20	KS	Goodland	Renner Fld/Goodland Muni/	9/5496	11/21/19	ILS OR LOC RWY 30, Amdt 2B.
30-Jan-20	KS	Goodland	Renner Fld/Goodland Muni/	9/5497	11/21/19	RNAV (GPS) RWY 23, Amdt 1B.
30-Jan-20	KS	Goodland	Renner Fld/Goodland Muni/	9/5498	11/21/19	RNAV (GPS) RWY 30, Amdt 1B.
30-Jan-20	KS	Goodland	Renner Fld/Goodland Muni/	9/5499	11/21/19	VOR RWY 30, Amdt 9B.
30-Jan-20	MO	Cuba	Cuba Muni	9/5528	11/20/19	RNAV (GPS) RWY 18, Orig-B.
30-Jan-20	FL	Milton	Peter Prince Field	9/5529	11/20/19	RNAV (GPS) RWY 36, Amdt 1B.
30-Jan-20	TX	Taylor	Taylor Muni	9/5949	11/20/19	RNAV (GPS) RWY 17, Orig-A.
30-Jan-20	NY	Oneonta	Oneonta Muni	9/6042	11/20/19	RNAV (GPS) RWY 6, Orig-A.
30-Jan-20	VA	Richmond	Richmond Intl	9/6123	11/20/19	RNAV (RNP) Y RWY 20, Orig-B.
30-Jan-20	VA	Richmond	Richmond Intl	9/6124	11/20/19	RNAV (RNP) Y RWY 34, Orig-C.
30-Jan-20	VA	Richmond	Richmond Intl	9/6125	11/20/19	RNAV (GPS) Z RWY 34, Amdt 1D.
30-Jan-20	VA	Richmond	Richmond Intl	9/6126	11/20/19	VOR RWY 2, Amdt 6A.
30-Jan-20	VA	Richmond	Richmond Intl	9/6127	11/20/19	VOR RWY 16, Amdt 27B.
30-Jan-20	VA	Richmond	Richmond Intl	9/6129	11/20/19	VOR RWY 34, Amdt 23B.
30-Jan-20	CO	Monte Vista	Monte Vista Muni	9/6133	11/20/19	VOR/DME-A, Amdt 3.
30-Jan-20	WI	Fond Du Lac	Fond Du Lac County	9/6157	11/20/19	VOR/DME RWY 36, Amdt 6C.
30-Jan-20	VA	Lawrenceville	Lawrenceville/Brunswick Muni	9/6240	11/20/19	RNAV (GPS)-A, Orig.
30-Jan-20	VA	Lawrenceville	Lawrenceville/Brunswick Muni	9/6241	11/20/19	Takeoff Minimums and Obstacle DP, Orig.
30-Jan-20	VA	Lawrenceville	Lawrenceville/Brunswick Muni	9/6242	11/20/19	RNAV (GPS)-B, Orig.
30-Jan-20	OK	Wagoner	Hefner-Easley	9/6887	11/20/19	RNAV (GPS) RWY 18, Amdt 1.
30-Jan-20	NV	Las Vegas	North Las Vegas	9/6985	11/20/19	ILS OR LOC RWY 12L, Orig-C.
30-Jan-20	AK	St Paul Island	St Paul Island	9/7143	11/20/19	ILS OR LOC RWY 36, Amdt 4.
30-Jan-20	AK	St Paul Island	St Paul Island	9/7144	11/20/19	RNAV (GPS) RWY 36, Amdt 1.
30-Jan-20	AK	St Paul Island	St Paul Island	9/7146	11/20/19	LOC/DME BC RWY 18, Amdt 4B.
30-Jan-20	AK	St Paul Island	St Paul Island	9/7152	11/20/19	RNAV (GPS) RWY 18, Amdt 2B.
30-Jan-20	KY	Springfield	Lebanon Springfield-George Hoerter Field	9/7340	11/25/19	RNAV (GPS) RWY 11, Amdt 1.
30-Jan-20	FL	Panama City	Northwest Florida Beaches Intl	9/7435	11/20/19	ILS OR LOC RWY 16, ILS RWY 16 (SA CAT I), ILS RWY 16 (SA CAT II), Amdt 3.
30-Jan-20	FL	Merritt Island	Merritt Island	9/7572	11/20/19	RNAV (GPS) RWY 11, Amdt 1C.
30-Jan-20	TX	Kerrville	Kerrville Muni/Louis Schreiner Field	9/7901	11/26/19	VOR-A, Amdt 3A.
30-Jan-20	ND	Fargo	Hector Intl	9/7935	11/26/19	ILS OR LOC RWY 18, Orig-D.
30-Jan-20	PA	Meadville	Port Meadville	9/8260	11/20/19	RNAV (GPS) RWY 25, Amdt 1E.
30-Jan-20	LA	Lake Charles	Chennault Intl	9/8269	11/20/19	RNAV (GPS) RWY 33, Amdt 1.
30-Jan-20	CO	Telluride	Telluride Rgnl	9/8368	11/20/19	VOR/DME-A, Amdt 1.
30-Jan-20	WY	Rock Springs	Southwest Wyoming Rgnl	9/8369	11/20/19	VOR/DME RWY 27, Amdt 2A.
30-Jan-20	WY	Rock Springs	Southwest Wyoming Rgnl	9/8374	11/20/19	VOR RWY 9, Amdt 3A.
30-Jan-20	MI	Grand Haven	Grand Haven Memorial Airpark	9/8420	11/20/19	RNAV (GPS) RWY 9, Orig.
30-Jan-20	AR	Mena	Mena Intermountain Muni	9/8444	11/26/19	ILS OR LOC RWY 27, Amdt 1B.
30-Jan-20	AR	Mena	Mena Intermountain Muni	9/8445	11/26/19	NDB RWY 27, Amdt 1A.
30-Jan-20	MO	Brookfield	North Central Missouri Rgnl	9/8451	12/10/19	RNAV (GPS) RWY 18, Orig.
30-Jan-20	MO	Brookfield	North Central Missouri Rgnl	9/8452	12/10/19	RNAV (GPS) RWY 36, Amdt 2A.
30-Jan-20	OR	Baker City	Baker City Muni	9/8453	11/26/19	VOR-A, Amdt 1B.
30-Jan-20	OR	Baker City	Baker City Muni	9/8454	11/26/19	VOR/DME RWY 13, Amdt 11D.
30-Jan-20	CA	Watsonville	Watsonville Muni	9/8923	11/20/19	VOR-A, Amdt 1A.
30-Jan-20	CA	Watsonville	Watsonville Muni	9/8924	11/20/19	LOC RWY 2, Amdt 4B.
30-Jan-20	FL	Clewiston	Airglades	9/8940	11/20/19	RNAV (GPS) RWY 13, Orig-A.
30-Jan-20	FL	Clewiston	Airglades	9/8968	11/20/19	RNAV (GPS) RWY 31, Orig.
30-Jan-20	ME	Fryeburg	Eastern Slopes Rgnl	9/8981	11/26/19	RNAV (GPS) RWY 32, Amdt 1A.
30-Jan-20	CA	Los Angeles	Whiteman	9/9009	11/26/19	RNAV (GPS) RWY 12, Orig.
30-Jan-20	MN	Duluth	Duluth Intl	9/9022	11/26/19	RADAR-1, Orig.
30-Jan-20	KS	Olathe	New Century Aircenter	9/9169	11/26/19	RNAV (GPS) RWY 18, Amdt 2.
30-Jan-20	KS	Olathe	New Century Aircenter	9/9171	11/26/19	RNAV (GPS) RWY 36, Amdt 2.
30-Jan-20	TX	Hondo	South Texas Rgnl At Hondo	9/9193	11/26/19	NDB RWY 35R, Amdt 5.
30-Jan-20	TX	Hondo	South Texas Rgnl At Hondo	9/9194	11/26/19	RNAV (GPS) RWY 35R, Orig.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9332	11/27/19	RNAV (GPS) RWY 4, Amdt 2C.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9335	11/27/19	RNAV (GPS) RWY 22, Amdt 2B.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9336	11/27/19	ILS OR LOC RWY 14, Amdt 6B.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9337	11/27/19	ILS OR LOC RWY 32, Amdt 8B.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9338	11/27/19	RNAV (GPS) RWY 14, Amdt 3B.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9339	11/27/19	RNAV (GPS) RWY 32, Amdt 3B.
30-Jan-20	FL	Sarasota/Bradenton	Sarasota/Bradenton Intl	9/9341	11/27/19	VOR RWY 14, Amdt 18B.
30-Jan-20	IN	Bedford	Virgil I Grissom Muni	9/9770	11/20/19	VOR/DME RWY 13, Amdt 10B.
30-Jan-20	MD	Baltimore	Baltimore/Washington Intl Thurgood Marshall	9/9974	11/20/19	RNAV (RNP) Z RWY 33L, Amdt 3.
30-Jan-20	MD	Baltimore	Baltimore/Washington Intl Thurgood Marshall	9/9975	11/20/19	ILS OR LOC RWY 33L, ILS RWY 33L (SA CAT I & II), Amdt 12.